In Our Time

Melvyn Bragg and guests discuss one of the most influential economists from the age of Adam Smith and Thomas Malthus. Ricardo (1772 -1823) reputedly made his fortune at the Battle of Waterloo, and he made his lasting impact with his ideas on free trade. At a time when nations preferred to be self-sufficient, to produce all their own food and manufacture their own goods, and to find markets for export rather than import, Ricardo argued for free trade even with rivals for the benefit of all. He contended that existing economic policy unduly favoured landlords above all others and needed to change, and that nations would be less likely to go to war with their trading partners if they were more reliant on each other. For the last two hundred years, Ricardo’s Theory of Comparative Advantage in support of free trade has been developed and reinterpreted by generations of economists across the political spectrum. With Matthew Watson Professor of Political Economy at the University of Warwick Helen Paul Lecturer in Economics and Economic History at the University of Southampton And Richard Whatmore Professor of Modern History at the University of St Andrews and Co-Director of the St Andrews Institute of Intellectual History Producer: Simon Tillotson

Melvyn Bragg and guests discuss Euripides' great tragedy, which was first performed in Athens in 405 BC when the Athenians were on the point of defeat and humiliation in a long war with Sparta. The action seen or described on stage was brutal: Pentheus, king of Thebes, is torn into pieces by his mother in a Bacchic frenzy and his grandparents condemned to crawl away as snakes. All this happened because Pentheus had denied the divinity of his cousin Dionysus, known to the audience as god of wine, theatre, fertility and religious ecstasy. The image above is a detail of a Red-Figure Cup showing the death of Pentheus (exterior) and a Maenad (interior), painted c. 480 BC by the Douris painter. This object can be found at the Kimbell Art Museum in Fort Worth, Texas. With Edith Hall Professor of Classics at King’s College London Emily Wilson Professor of Classical Studies at the University of Pennsylvania And Rosie Wyles Lecturer in Classical History and Literature at the University of Kent Producer: Simon Tillotson

Melvyn Bragg and guests discuss the devastating mass extinctions of the Late Devonian Period, roughly 370 million years ago, when around 70 percent of species disappeared. Scientists are still trying to establish exactly what happened, when and why, but this was not as sudden as when an asteroid hits Earth. The Devonian Period had seen the first trees and soils and it had such a diversity of sea life that it’s known as the Age of Fishes, some of them massive and armoured, and, in one of the iconic stages in evolution, some of them moving onto land for the first time. One of the most important theories for the first stage of this extinction is that the new soils washed into oceans, leading to algal blooms that left the waters without oxygen and suffocated the marine life. The image above is an abstract group of the huge, armoured Dunkleosteus fish, lost in the Late Devonian Extinction With Jessica Whiteside Associate Professor of Geochemistry in the Department of Ocean and Earth Science at the University of Southampton David Bond Professor of Geology at the University of Hull And Mike Benton Professor of Vertebrate Paleontology at the School of Life Sciences, University of Bristol.

In this 900th edition of the programme, Melvyn Bragg and guests discuss one of the best known and most influential of the poems of the Romantic movement. Samuel Taylor Coleridge (1772-1834) wrote The Rime of the Ancient Mariner in 1798 after discussions with his friend Wordsworth. He refined it for the rest of his life, and it came to define him, a foreshadowing of his opium-addicted, lonely wandering and deepening sense of guilt. The poem tells of a sailor compelled to tell and retell the story of a terrible voyage in his youth, this time as guests are heading to a wedding party, where he stoppeth one of three. The image above is from Gustave Doré's illustration of the mariner's shooting of the albatross, for an 1877 German language edition of the poem With Sir Jonathan Bate Professor of Environmental Humanities at Arizona State University Tom Mole Professor of English Literature and Book History at the University of Edinburgh And Rosemary Ashton Emeritus Quain Professor of English Language and Literature at University College London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the man who, according to Machiavelli, was the last of the Five Good Emperors. Marcus Aurelius, 121 to 180 AD, has long been known as a model of the philosopher king, a Stoic who, while on military campaigns, compiled ideas on how best to live his life, and how best to rule. These ideas became known as his Meditations, and they have been treasured by many as an insight into the mind of a Roman emperor, and an example of how to avoid the corruption of power in turbulent times. The image above shows part of a bronze equestrian statue of Marcus Aurelius. With Simon Goldhill Professor of Greek Literature and Culture and Fellow of King’s College, Cambridge Angie Hobbs Professor of the Public Understanding of Philosophy at the University of Sheffield And Catharine Edwards Professor of Classics and Ancient History at Birkbeck, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the idea and experience of Christian pilgrimage in Europe from the 12th to the 15th centuries, which figured so strongly in the imagination of the age. For those able and willing to travel, there were countless destinations from Jerusalem, Rome and Santiago de Compostela to the smaller local shrines associated with miracles and relics of the saints. Meanwhile, for those unable or not allowed to travel there were journeys of the mind, inspired by guidebooks that would tell the faithful how many steps they could take around their homes to replicate the walk to the main destinations in Rome and the Holy Land, passing paintings of the places on their route. The image above is of a badge of St Thomas of Canterbury, worn by pilgrims who had journeyed to his shrine. With Miri Rubin Professor of Medieval and Early Modern History at Queen Mary, University of London Kathryn Rudy Professor of Art History at the University of St Andrews And Anthony Bale Professor of Medieval Studies and Dean of the School of Arts at Birkbeck, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss one of the most famous museum objects in the world, shown in the image above in replica, and dating from around 196 BC. It is a damaged, dark granite block on which you can faintly see three scripts engraved: Greek at the bottom, Demotic in the middle and Hieroglyphs at the top. Napoleon’s soldiers found it in a Mamluk fort at Rosetta on the Egyptian coast, and soon realised the Greek words could be used to unlock the hieroglyphs. It was another 20 years before Champollion deciphered them, becoming the first to understand the hieroglyphs since they fell out of use 1500 years before and so opening up the written culture of ancient Egypt to the modern age. With Penelope Wilson Associate Professor of Egyptian Archaeology at Durham University Campbell Price Curator of Egypt and Sudan at the Manchester Museum And Richard Bruce Parkinson Professor of Egyptology and Fellow of The Queen’s College, University of Oxford Producer: Simon Tillotson

Melvyn Bragg and guests discuss one of the outstanding French mathematicians and natural philosophers of the 18th Century, celebrated across Europe. Emilie du Châtelet, 1706-49, created a translation of Newton’s Principia from Latin into French that helped spread the light of mathematics on the emerging science, and her own book Institutions de Physique, with its lessons on physics, was welcomed as profound. She had the privileges of wealth and aristocracy, yet had to fight to be taken seriously as an intellectual in a world of ideas that was almost exclusively male. With Patricia Fara Emeritus Fellow of Clare College, Cambridge David Wootton Anniversary Professor of History at the University of York And Judith Zinsser Professor Emerita of History at Miami University of Ohio and biographer of Emilie du Châtelet. Producer: Simon Tillotson

Melvyn Bragg and guests discuss the Northumbrian man who, for 500 years, was the pre-eminent English saint, to be matched only by Thomas Becket after his martyrdom in 1170. Now at Durham, Cuthbert was buried first on Lindisfarne in 687AD, where monks shared vivid stories of his sanctifying miracles, his healing, and his power over nature, and his final tomb became a major site of pilgrimage. In his lifetime he was both hermit and kingmaker, bishop and travelling priest, and the many accounts we have of him, including two by Bede, tell us much of the values of those who venerated him so soon after his death. The image above is from a stained glass window in the south aisle of the nave in Durham Cathedral: 'St Cuthbert praying before his cell in the Farne Island' With Jane Hawkes Professor of Medieval Art History at the University of York Sarah Foot The Regius Professor of Ecclesiastical History at the University of Oxford and Canon of Christ Church Cathedral And John Hines Professor of Archaeology at Cardiff University Producer: Simon Tillotson

Melvyn Bragg and guests discuss the plague that broke out in Constantinople 541AD, in the reign of Emperor Justinian. According to the historian Procopius, writing in Byzantium at the time, this was a plague by which the whole human race came near to being destroyed, embracing the whole world, and blighting the lives of all mankind. The bacterium behind the Black Death has since been found on human remains from that time, and the symptoms described were the same, and evidence of this plague has since been traced around the Mediterranean and from Syria to Britain and Ireland. The question of how devastating it truly was, though, is yet to be resolved. With John Haldon Professor of Byzantine History and Hellenic Studies Emeritus at Princeton University Rebecca Flemming Senior Lecturer in Classics at the University of Cambridge And Greg Woolf Director of the Institute of Classical Studies, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss F Scott Fitzgerald’s finest novel, published in 1925, one of the great American novels of the twentieth century. It is told by Nick Carraway, neighbour and friend of the mysteriously wealthy Jay Gatsby. In the age of jazz and prohibition, Gatsby hosts lavish parties at his opulent home across the bay from Daisy Buchanan, in the hope she’ll attend one of them and they can be reunited. They were lovers as teenagers but she had given him up for a richer man who she soon married, and Gatsby is obsessed with winning her back. The image above is of Robert Redford as Gatsby in a scene from the film 'The Great Gatsby', 1974. With Sarah Churchwell Professor of American Literature and Public Understanding of the Humanities at the University of London Philip McGowan Professor of American Literature at Queen’s University, Belfast And William Blazek Associate Professor and Reader in American Literature at Liverpool Hope University Produced by Simon Tillotson and Julia Johnson

Melvyn Bragg and guests discuss solar eclipses, some of life’s most extraordinary moments, when day becomes night and the stars come out before day returns either all too soon or not soon enough, depending on what you understand to be happening. In ancient China, for example, there was a story that a dragon was eating the sun and it had to be scared away by banging pots and pans if the sun were to return. Total lunar eclipses are more frequent and last longer, with a blood moon coloured red like a sunrise or sunset. Both events have created the chance for scientists to learn something remarkable, from the speed of light, to the width of the Atlantic, to the roundness of Earth, to discovering helium and proving Einstein’s Theory of General Relativity. With Carolin Crawford Public Astronomer based at the Institute of Astronomy, University of Cambridge and a fellow of Emmanuel College Frank Close Emeritus Professor of Physics at the University of Oxford And Lucie Green Professor of Physics and a Royal Society University Research Fellow at Mullard Space Science Laboratory at University College London Producers: Simon Tillotson and Julia Johnson

Melvyn Bragg and guests discuss Chairman Mao and the revolt he led within his own party from 1966, setting communists against each other, to renew the revolution that he feared had become too bourgeois and to remove his enemies and rivals. Universities closed and the students formed Red Guard factions to attack the 'four olds' - old ideas, culture, habits and customs - and they also turned on each other, with mass violence on the streets and hundreds of thousands of deaths. Over a billion copies of Chairman Mao’s Little Red Book were printed to support his cult of personality, before Mao himself died in 1976 and the revolution came to an end. The image above is of Red Guards, holding The Little Red Book, cheering Mao during a meeting to celebrate the Great Proletarian Cultural Revolution at Tiananmen Square, Beijing, August 1966 With Rana Mitter Professor of the History and Politics of Modern China and Fellow of St Cross College, University of Oxford Sun Peidong Visiting Professor at the Center for International Studies at Sciences Po, Paris And Julia Lovell Professor in Modern Chinese History and Literature at Birkbeck, University of London Produced by Simon Tillotson and Julia Johnson

Melvyn Bragg and guests discuss John Wesley (1703 - 1791) and the movement he was to lead and inspire. As a student, he was mocked for approaching religion too methodically and this jibe gave a name to the movement: Methodism. Wesley took his ideas out across Britain wherever there was an appetite for Christian revival, preaching in the open, especially the new industrial areas. Others spread Methodism too, such as George Whitefield, and the sheer energy of the movement led to splits within it, but it soon became a major force. With Stephen Plant Dean and Runcie Fellow at Trinity Hall at the University of Cambridge Eryn White Reader in Early Modern History at Aberystwyth University And William Gibson Professor of Ecclesiastical History at Oxford Brookes University and Director of the Oxford Centre for Methodism and Church History Produced by Simon Tillotson and Julia Johnson

Melvyn Bragg and guests discuss the Portuguese poet Pessoa (1888-1935) who was largely unknown in his lifetime but who, in 1994, Harold Bloom included in his list of the 26 most significant western writers since the Middle Ages. Pessoa wrote in his own name but mainly in the names of characters he created, each with a distinctive voice and biography, which he called heteronyms rather than pseudonyms, notably Ricardo Reis, Alberto Caeiro, Álvaro de Campos and one who was closer to Pessoa's own identity, Bernardo Soares. Most of Pessoa's works were unpublished at his death, discovered in a trunk; as more and more was printed and translated, his fame and status grew. With Cláudia Pazos-Alonso Professor of Portuguese and Gender Studies and Senior Research Fellow at Wadham College, University of Oxford Juliet Perkins Visiting Senior Research Fellow in Portuguese Studies at King’s College London And Paulo de Medeiros Professor of English and Comparative Literary Studies at the University of Warwick Producer: Simon Tillotson

Melvyn Bragg and guests discuss the notorious events off Jamaica in 1781 and their background. The British slave ship Zong, having sailed across the Atlantic towards Jamaica, threw 132 enslaved Africans from its human cargo into the sea to drown. Even for a slave ship, the Zong was overcrowded; those murdered were worth more to the ship dead than alive. The crew said there was not enough drinking water to go round and they had no choice, which meant they could claim for the deaths on insurance. The main reason we know of this atrocity now is that the owners took their claim to court in London, and the insurers were at first told to pay up as if the dead slaves were any other lost goods, not people. Abolitionists in Britain were scandalised: if courts treated mass murder in the slave trade as just another business transaction and not a moral wrong, the souls of the nation would be damned. But nobody was ever prosecuted. The image above is of sailors throwing slaves overboard, from Torrey's 'American Slave Trade', 1822 With Vincent Brown Charles Warren, professor of American history and professor of African and African American studies at Harvard University Bronwen Everill Class of 1973, lecturer in history and fellow at Gonville and Caius College, University of Cambridge And Jake Subryan Richards assistant professor of History at the London School of Economics Studio production: Hannah Sander

Melvyn Bragg and guests discuss the great German artist Albrecht Dürer (1471-1528) who achieved fame throughout Europe for the power of his images. These range from his woodcut of a rhinoceros, to his watercolour of a young hare, to his drawing of praying hands and his stunning self-portraits such as that above (albeit here in a later monochrome reproduction) with his distinctive A D monogram. He was expected to follow his father and become a goldsmith, but found his own way to be a great artist, taking public commissions that built his reputation but did not pay, while creating a market for his prints, and he captured the timeless and the new in a world of great change. With Susan Foister Deputy Director and Curator of German Paintings at the National Gallery Giulia Bartrum Freelance art historian and Former Curator of German Prints and Drawings at the British Museum And Ulinka Rublack Professor of Early Modern European History and Fellow of St John’s College, University of Cambridge Studio production: John Goudie

The philosopher Mary Astell (1666 – 1731) has been described as “the first English feminist”. Born in Newcastle in relatively poor circumstances in the aftermath of the upheaval of the English Civil War and the restoration of the monarchy, she moved to London as a young woman and became part of an extraordinary circle of intellectual and aristocratic women. In her pioneering publications, she argued that women’s education should be expanded, that men and women’s minds were the same and that no woman should be forced to marry against her will. Perhaps her most famous quotation is: “If all Men are born Free, why are all Women born Slaves?” Today, she is one of just a handful of female philosophers to be featured in the multi-volume Cambridge History of Political Thought. The image above is from Astell's "Reflections upon Marriage", 3rd edition, 1706, held by the British Library (Shelfmark 8415.bb.27) With: Hannah Dawson Senior Lecturer in the History of Ideas at King’s College London Mark Goldie Professor Emeritus of Intellectual History at the University of Cambridge Teresa Bejan Associate Professor of Political Theory at Oriel College, University of Oxford Producer: Simon Tillotson

Melvyn Bragg and guests discuss William Langland's poem, written around 1370, about a man called Will who fell asleep on the Malvern Hills and dreamed of Piers the Plowman. This was a time between the Black Death and The Peasants’ Revolt, when Christians wanted to save their souls but doubted how best to do it - and had to live with that uncertainty. Some call this the greatest medieval poem in English, one offering questions not answers, and it can be as unsettling now as it was then. With Laura Ashe Professor of English Literature at Worcester College, University of Oxford Lawrence Warner Professor of Medieval English at King’s College London And Alastair Bennett Lecturer in Medieval Literature at Royal Holloway, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss Maria Theresa (1717-1780) who inherited the Austrian throne in 1740 at the age of 23. Her neighbours circled like wolves and, within two months, Frederick the Great had seized one of her most prized lands, Silesia, exploiting her vulnerability. Yet over the next forty years through political reforms, alliances and marriages, she built Austria up into a formidable power, and she would do whatever it took to save the souls of her Catholic subjects, with a rigidity and intolerance that Joseph II, her son and heir, could not wait to challenge. With Catriona Seth Marshal Foch Professor of French Literature at the University of Oxford Martyn Rady Professor of Central European History at University College London And Thomas Biskup Lecturer in Early Modern History at the University of Hull Producer: Simon Tillotson

Melvyn Bragg and guests discuss Alan Turing (1912-1954) whose 1936 paper On Computable Numbers effectively founded computer science. Immediately recognised by his peers, his wider reputation has grown as our reliance on computers has grown. He was a leading figure at Bletchley Park in the Second World War, using his ideas for cracking enemy codes, work said to have shortened the war by two years and saved millions of lives. That vital work was still secret when Turing was convicted in 1952 for having a sexual relationship with another man for which he was given oestrogen for a year, or chemically castrated. Turing was to kill himself two years later. The enormity of his contribution to computing was recognised in the 1960s by the creation of the Turing Award, known as the Nobel of computer science, and he is to be the new face on the £50 note. With Leslie Ann Goldberg Professor of Computer Science and Fellow of St Edmund Hall, University of Oxford Simon Schaffer Professor of the History of Science at the University of Cambridge and Fellow of Darwin College And Andrew Hodges Biographer of Turing and Emeritus Fellow of Wadham College, Oxford Producer: Simon Tillotson

Melvyn Bragg and guests discuss the idea that God created the universe and then left it for humans to understand by reason not revelation. Edward Herbert, 1583-1648 (pictured above) held that there were five religious truths: belief in a Supreme Being, the need to worship him, the pursuit of a virtuous life as the best form of worship, repentance, and reward or punishment after death. Others developed these ideas in different ways, yet their opponents in England's established Church collected them under the label of Deists, called Herbert the Father of Deism and attacked them as a movement, and Deist books were burned. Over time, reason and revelation found a new balance in the Church in England, while Voltaire and Thomas Paine explored the ideas further, leading to their re-emergence in the French and American Revolutions. With Richard Serjeantson Fellow and Lecturer in History at Trinity College, Cambridge Katie East Lecturer in History at Newcastle University And Thomas Ahnert Professor of Intellectual History at the University of Edinburgh Producer: Simon Tillotson

Melvyn Bragg and guests discuss one of Shakespeare’s greatest tragedies. When three witches prophesy that Macbeth will be king one day, he is not prepared to wait and almost the next day he murders King Duncan as he sleeps, a guest at Macbeth’s castle. From there we explore their brutal world where few boundaries are distinct – between safe and unsafe, friend and foe, real and unreal, man and beast – until Macbeth too is slaughtered. The image above shows Nicol Williamson as Macbeth in a 1983 BBC TV adaptation. With: Emma Smith Professor of Shakespeare Studies at Hertford College, University of Oxford Kiernan Ryan Emeritus Professor of English Literature at Royal Holloway, University of London And David Schalkwyk, Professor of Shakespeare Studies and Director of Global Shakespeare at Queen Mary, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss ideas about the Stone Age people who created the extraordinary images found in caves around the world, from hand outlines to abstract symbols to the multicoloured paintings of prey animals at Chauvet and, as shown above, at Lascaux. In the 19th Century, it was assumed that only humans could have made these, as Neanderthals would have lacked the skills or imagination, but new tests suggest otherwise. How were the images created, were they meant to be for private viewing or public spaces, and what might their purposes have been? And, if Neanderthals were capable of creative work, in what ways were they different from humans? What might it have been like to experience the paintings, so far from natural light? With Alistair Pike Professor of Archaeological Sciences at the University of Southampton Chantal Conneller Senior Lecturer in Early Pre-History at Newcastle University And Paul Pettitt Professor of Palaeolithic Archaeology at Durham University Producer: Simon Tillotson

Melvyn Bragg and guests discuss Pericles (495-429BC), the statesman who dominated the politics of Athens for thirty years, the so-called Age of Pericles, when the city’s cultural life flowered, its democracy strengthened as its empire grew, and the Acropolis was adorned with the Parthenon. In 431 BC he gave a funeral oration for those Athenians who had already died in the new war with Sparta which has been celebrated as one of the greatest speeches of all time, yet within two years he was dead from a plague made worse by Athenians crowding into their city to avoid attacks. Thucydides, the historian, knew him and was in awe of him, yet few shared that view until the nineteenth century, when they found much in Pericles to praise, an example for the Victorian age. With Edith Hall Professor of Classics at King's College London. Paul Cartledge AG Leventis Senior Research Fellow at Clare College, University of Cambridge And Peter Liddel Senior Lecturer in Ancient History at the University of Manchester Producer: Simon Tillotson

In a programme first broadcast in May 2019, Melvyn Bragg and guests discuss Mary Shelley's (1797-1851) Gothic story of a Swiss natural philosopher, Victor Frankenstein, and the creature he makes from parts of cadavers and which he then abandons, horrified by his appearance, and never names. Rejected by all humans who see him, the monster takes his revenge on Frankenstein, killing those dear to him. Shelley started writing Frankenstein when she was 18, prompted by a competition she had with Byron and her husband Percy Shelley to tell a ghost story while they were rained in in the summer of 1816 at the Villa Diodati by Lake Geneva. The image of Mary Shelley, above, was first exhibited in 1840. With Karen O'Brien Professor of English Literature at the University of Oxford Michael Rossington Professor of Romantic Literature at Newcastle University And Jane Thomas Professor of Victorian and Early 20th Century Literature at the University of Hull Producer: Simon Tillotson This programme is a repeat

Melvyn Bragg and guests discuss the bonds that Scottish Presbyterians made between themselves and their monarchs in the 16th and 17th Centuries, to maintain their form of worship. These covenants bound James VI of Scotland to support Presbyterians yet when he became James I he was also expected to support episcopacy. That tension came to a head under Charles I who found himself on the losing side of a war with the Covenanters, who later supported Parliament before backing the future Charles II after he had pledged to support them. Once in power, Charles II failed to deliver the religious settlement the Covenanters wanted, and set about repressing them violently. Those who refused to renounce the covenants were persecuted in what became known as The Killing Times, as reflected in the image above. With Roger Mason Professor of Scottish History at the University of St Andrews Laura Stewart Professor of Early Modern British History at the University of York And Scott Spurlock Professor of Scottish and Early Modern Christianities at the University of Glasgow Producer: Simon Tillotson

Melvyn Bragg and guests discuss the theoretical physicist Dirac (1902-1984), whose achievements far exceed his general fame. To his peers, he was ranked with Einstein and, when he moved to America in his retirement, he was welcomed as if he were Shakespeare. Born in Bristol, he trained as an engineer before developing theories in his twenties that changed the understanding of quantum mechanics, bringing him a Nobel Prize in 1933 which he shared with Erwin Schrödinger. He continued to make deep contributions, bringing abstract maths to physics, beyond predicting anti-particles as he did in his Dirac Equation. With Graham Farmelo Biographer of Dirac and Fellow at Churchill College, Cambridge Valerie Gibson Professor of High Energy Physics at the University of Cambridge and Fellow of Trinity College And David Berman Professor of Theoretical Physics at Queen Mary University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the origins of horses, from their dog sized ancestors to their proliferation in the New World until hunted to extinction, their domestication in Asia and their development since. The genetics of the modern horse are the most studied of any animal, after humans, yet it is still uncertain why they only have one toe on each foot when their wider family had more, or whether speed or stamina has been more important in their evolution. What is clear, though, is that when humans first chose to ride horses, as well as eat them, the future of both species changed immeasurably. With Alan Outram Professor of Archaeological Science at the University of Exeter Christine Janis Honorary Professor in Palaeobiology at the University of Bristol and Professor Emerita in Ecology and Evolutionary Biology at Brown University And John Hutchinson Professor in Evolutionary Biomechanics at the Royal Veterinary College Producer: Simon Tillotson

Melvyn Bragg and guests discuss the debate in Valladolid, Spain in 1550, over Spanish rights to enslave the native peoples in the newly conquered lands. Bartolomé de Las Casas (pictured above), the Bishop of Chiapas, Mexico, was trying to end the encomienda system in which those who now owned the land could also take the people in forced labour. Juan Gines Sepulveda, a philosopher, argued for the colonists' property rights over people, asserting that some native Americans were 'natural slaves' as defined by Aristotle. Valladolid became seen as the first open attempt by European colonists to discuss the ethics of slavery, and Las Casas became known as 'Saviour of the Indians' and an advocate for human rights, although for some time he argued that African slaves be imported to do the work in place of the native people, before repenting. With Caroline Dodds Pennock Senior Lecturer in International History at the University of Sheffield John Edwards Faculty Fellow in Spanish at the University of Oxford And Julia McClure Lecturer in Late Medieval and Early Modern Global History at the University of Glasgow Producer: Simon Tillotson

Melvyn Bragg and guests discuss the great Roman military disaster of 9 AD when Germanic tribes under Arminius ambushed and destroyed three legions under Varus. According to Suetonius, emperor Augustus hit his head against the wall when he heard the news, calling on Varus to give him back his legions. The defeat ended Roman expansion east of the Rhine. Victory changed the development of the Germanic peoples, both in the centuries that followed and in the nineteenth century when Arminius, by then known as Herman, became a rallying point for German nationalism. With Peter Heather Professor of Medieval History at King’s College London Ellen O'Gorman Senior Lecturer in Classics at the University of Bristol And Matthew Nicholls Fellow and Senior Tutor at St John’s College, Oxford Producer: Simon Tillotson

Melvyn Bragg and guests discuss the works and life of one of the most popular writers in Europe in C19th, Amantine Lucile Aurore Dupin (1804-1876) who wrote under the name George Sand. When she wrote her first novel under that name, she referred to herself as a man. This was in Indiana (1832), which had the main character breaking away from her unhappy marriage. It made an immediate impact as it overturned the social conventions of the time and it drew on her own early marriage to an older man, Casimir Dudevant. Once Sand's identity was widely known, her works became extremely popular in French and in translation, particularly her rural novels, outselling Hugo and Balzac in Britain, perhaps buoyed by an interest in her personal life, as well as by her ideas on the rights and education of women and strength of her writing. With Belinda Jack Fellow and Tutor in French at Christ Church, University of Oxford Angela Ryan Senior Lecturer in French at University College Cork And Nigel Harkness Pro-Vice-Chancellor for Humanities and Social Sciences and Professor of French at Newcastle University Producer: Simon Tillotson

Melvyn Bragg and guests discuss Alcuin of York, c735-804AD, who promoted education as a goal in itself, and had a fundamental role in the renaissance at Charlemagne's court. He wrote poetry and many letters, hundreds of which survive and provide insight into his life and times. He was born in or near York and spent most of his life in Northumbria before accepting an invitation to Charlemagne's court in Aachen. To this he brought Anglo-Saxon humanism, encouraging a broad liberal education for itself and the better to understand Christian doctrine. He left to be abbot at Marmoutier, Tours, where the monks were developing the Carolingian script that influenced the Roman typeface. The image above is Alcuin’s portrait, found in a copy of the Bible made at his monastery in Tours during the rule of his successor Abbot Adalhard (834–843). Painted in red on gold leaf, it shows Alcuin with a tonsure and a halo, signifying respect for his memory at the monastery where he had died in 804. His name and rank are spelled out alongside: Alcvinvs abba, ‘Alcuin the abbot’. It is held at the Staatsbibliothek Bamberg -Kaiser-Heinrich-Bibliothek - Msc.Bibl.1,fol.5v (photo by Gerald Raab). With Joanna Story Professor of Early Medieval History at the University of Leicester Andy Orchard Rawlinson and Bosworth Professor of Anglo-Saxon at the University of Oxford and a fellow of Pembroke College And Mary Garrison Lecturer in History at the Centre for Medieval Studies at the University of York Producer: Simon Tillotson

Melvyn Bragg and guests discuss the flow of particles from the outer region of the Sun which we observe in the Northern and Southern Lights, interacting with Earth's magnetosphere, and in comet tails that stream away from the Sun regardless of their own direction. One way of defining the boundary of the solar system is where the pressure from the solar wind is balanced by that from the region between the stars, the interstellar medium. Its existence was suggested from the C19th and Eugene Parker developed the theory of it in the 1950s and it has been examined and tested by a series of probes in C20th up to today, with more planned. With Andrew Coates Professor of Physics and Deputy Director in charge of the Solar System at the Mullard Space Science Laboratory, University College London Helen Mason OBE Reader in Solar Physics at the Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Fellow at St Edmund's College And Tim Horbury Professor of Physics at Imperial College London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the siege of Paris during the Franco-Prussian war and the social unrest that followed, as the French capital was cut off from the rest of the country and food was scarce. When the French government surrendered Paris to the Prussians, power gravitated to the National Guard in the city and to radical socialists, and a Commune established in March 1871 with the red flag replacing the trilcoleur. The French government sent in the army and, after bloody fighting, the Communards were defeated by the end of May 1871. The image above is from an engraving of the fire in the Tuileries Palace, May 23, 1871 With Karine Varley Lecturer in French and European History at the University of Strathclyde Robert Gildea Professor of Modern History at the University of Oxford And Julia Nicholls Lecturer in French and European Studies at King’s College London Producer: Simon Tillotson

Melvyn Bragg and guests discuss Catullus (c84-c54 BC) who wrote some of the most sublime poetry in the late Roman Republic, and some of the most obscene. He found a new way to write about love, in poems to the mysterious Lesbia, married and elusive, and he influenced Virgil and Ovid and others, yet his explicit poems were to blight his reputation for a thousand years. Once the one surviving manuscript was discovered in the Middle Ages, though, anecdotally as a plug in a wine butt, he inspired Petrarch and the Elizabethan poets, as he continues to inspire many today. The image above is of Lesbia and her Sparrow, 1860, artist unknown With Gail Trimble Brown Fellow and Tutor in Classics at Trinity College at the University of Oxford Simon Smith Reader in Creative Writing at the University of Kent, poet and translator of Catullus and Maria Wyke Professor of Latin at University College London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the discovery in 1922 of Tutankhamun's 3000 year old tomb and its impact on the understanding of ancient Egypt, both academic and popular. The riches, such as the death mask above, were spectacular and made the reputation of Howard Carter who led the excavation. And if the astonishing contents of the tomb were not enough, the drama of the find and the control of how it was reported led to a craze for 'King Tut' that has rarely subsided and has enthused and sometimes confused people around the world, seeking to understand the reality of Tutankhamun's life and times. With Elizabeth Frood Associate Professor of Egyptology, Director of the Griffith Institute and Fellow of St Cross at the University of Oxford Christina Riggs Professor of the History of Visual Culture at Durham University and a Fellow of All Souls College, Oxford And John Taylor Curator at the Department of Egypt and Sudan at the British Museum Producer: Simon Tillotson

Melvyn Bragg and guests discuss the life and poetry of WH Auden (1907-1973) up to his departure from Europe for the USA in 1939. As well as his personal life, he addressed suffering and confusion, and the moral issues that affected the wider public in the 1930s and tried to unpick what was going wrong in society and to understand those times. He witnessed the rise of totalitarianism in the austerity of that decade, travelling through Germany to Berlin, seeing Spain in the Civil War and China during its wars with Japan, often collaborating with Christopher Isherwood. In his lifetime his work attracted high praise and intense criticism, and has found new audiences in the fifty years since his death, sometimes taking literally what he meant ironically. With Mark Ford Poet and Professor of English at University College London Janet Montefiore Professor Emerita of 20th Century English Literature at the University of Kent And Jeremy Noel-Tod Senior Lecturer in Literature and Creative Writing at the University of East Anglia Producer: Simon Tillotson

Melvyn Bragg and guests discuss the history and social impact of coffee. From its origins in Ethiopia, coffea arabica spread through the Ottoman Empire before reaching Western Europe where, in the 17th century, coffee houses were becoming established. There, caffeinated customers stayed awake for longer and were more animated, and this helped to spread ideas and influence culture. Coffee became a colonial product, grown by slaves or indentured labour, with coffea robusta replacing arabica where disease had struck, and was traded extensively by the Dutch and French empires; by the 19th century, Brazil had developed into a major coffee producer, meeting demand in the USA that had grown on the waggon trails. With Judith Hawley Professor of 18th Century Literature at Royal Holloway, University of London Markman Ellis Professor of 18th Century Studies at Queen Mary University of London And Jonathan Morris Professor in Modern History at the University of Hertfordshire Producer: Simon Tillotson

Melvyn Bragg and guests discuss T.E. Lawrence (1888 – 1935), better known as Lawrence of Arabia, a topic drawn from over 1200 suggestions for our Listener Week 2019. Although Lawrence started as an archaeologist in the Middle East, when World War I broke out he joined the British army and became an intelligence officer. His contact with a prominent Arab leader, Sharif Hussein, made him sympathetic to Hussein’s cause and during the Arab Revolt of 1916 he not only served the British but also the interests of Hussein. After the war he was dismayed by the peace settlement and felt that the British had broken an assurance that Sharif Hussein would lead a new Arab kingdom. Lawrence was made famous by the work of Lowell Thomas, whose film of Lawrence drew huge audiences in 1919, which led to his own book Seven Pillars of Wisdom and David Lean’s 1962 film with Peter O'Toole. In previous Listener Weeks, we've discussed Kafka's The Trial, The Voyages of Captain Cook, Garibaldi and the Risorgimento, Moby Dick and The Thirty Years War. With Hussein Omar Lecturer in Modern Global History at University College Dublin Catriona Pennell Associate Professor of Modern History and Memory Studies at the University of Exeter Neil Faulkner Director of Military History Live and Editor of the magazine Military History Matters Producer: Simon Tillotson

Melvyn Bragg and guests discuss the life and ideas of Li Shizhen (1518-1593) whose compendium of natural medicines is celebrated in China as the most complete survey of natural remedies of its time. He trained as a doctor and worked at the Ming court before spending almost 30 years travelling in China, inspecting local plants and animals for their properties, trying them out on himself and then describing his findings in his Compendium of Materia Medica or Bencao Gangmu, in 53 volumes. He's been called the uncrowned king of Chinese naturalists, and became a scientific hero in the 20th century after the revolution. With Craig Clunas Professor Emeritus in the History of Art at the University of Oxford Anne Gerritsen Professor in History at the University of Warwick And Roel Sterckx Joseph Needham Professor of Chinese History at the University of Cambridge Producer: Simon Tillotson

Melvyn Bragg and guests discuss the most powerful woman in the Crusader states in the century after the First Crusade. Melisende (1105-61) was born and raised after the mainly Frankish crusaders had taken Jerusalem from the Fatimids, and her father was King of Jerusalem. She was married to Fulk from Anjou, on the understanding they would rule together, and for 30 years she vied with him and then their son as they struggled to consolidate their Frankish state in the Holy Land. The image above is of the coronation of Fulk with Melisende, from Livre d'Eracles, Guillaume de Tyr (1130?-1186) Source: Bibliothèque nationale de France With Natasha Hodgson Senior Lecturer in Medieval History and Director of the Centre for the Study of Religion and Conflict at Nottingham Trent University Katherine Lewis Senior Lecturer in History at the University of Huddersfield and Danielle Park Visiting Lecturer at Royal Holloway, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the novel written by Dostoevsky and published in 1866, in which Raskolnikov, a struggling student, justifies his murder of two women, as his future is more valuable than their lives. He thinks himself superior, above the moral laws that apply to others. The police have little evidence against him but trust him to confess, once he cannot bear the mental torture of his crime - a fate he cannot avoid, any more than he can escape from life in St Petersburg and his personal failures. The image above is from a portrait of Dostoevsky by Vasili Perov, 1872. With Sarah Hudspith Associate Professor in Russian at the University of Leeds Oliver Ready Lecturer in Russian at the University of Oxford, Research Fellow at St Antony’s College and a translator of this novel And Sarah Young Associate Professor in Russian at the School of Slavonic and East European Studies, University College London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the 1691 peace treaty that ended the Williamite War in Ireland, between supporters of the deposed King James II and the forces of William III and his allies. It followed the battles at Aughrim and the Boyne and sieges at Limerick, and led to the disbanding of the Jacobite army in Ireland, with troops free to follow James to France for his Irish Brigade. The Catholic landed gentry were guaranteed rights on condition of swearing loyalty to William and Mary yet, while some Protestants thought the terms too lenient, it was said the victors broke those terms before the ink was dry. The image above is from British Battles on Land and Sea, Vol. I, by James Grant, 1880, and is meant to show Irish troops leaving Limerick as part of The Flight of the Wild Geese - a term used for soldiers joining continental European armies from C16th-C18th. With Jane Ohlmeyer Chair of the Irish Research Council and Erasmus Smith’s Professor of Modern History at Trinity College Dublin Dr Clare Jackson Senior Tutor, Trinity Hall, and Faculty of History, University of Cambridge and Thomas O'Connor Professor of History at Maynooth University Producer: Simon Tillotson

Melvyn Bragg and guests discuss what happens when parents from different species have offspring, despite their genetic differences. In some cases, such as the zebra/donkey hybrid in the image above, the offspring are usually infertile but in others the genetic change can lead to new species with evolutionary advantages. Hybrids can occur naturally, yet most arise from human manipulation and Darwin's study of plant and animal domestication informed his ideas on natural selection. With Sandra Knapp Tropical Botanist at the Natural History Museum Nicola Nadeau Lecturer in Evolutionary Biology at the University of Sheffield And Steve Jones Senior Research Fellow in Genetics at University College London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the work of the man who, in his lifetime, was called The Caledonian Bard and whose fame and influence was to spread around the world. Burns (1759-1796) was born in Ayrshire and his work as a tenant farmer earned him the label The Ploughman Poet, yet it was the quality of his verse that helped his reputation endure and grow. His work inspired other Romantic poets and his personal story and ideas combined with that, giving his poems a broad strength and appeal - sung by revolutionaries and on Mao's Long March, as well as on New Year's Eve and at Burns Suppers. With Robert Crawford Professor of Modern Scottish Literature and Bishop Wardlaw Professor of Poetry at the University of St Andrews Fiona Stafford Professor of English at the University of Oxford and Murray Pittock Bradley Professor of English Literature and Pro Vice Principal at the University of Glasgow Producer: Simon Tillotson

Melvyn Bragg and guests discuss the ideas explored in HG Wells' novella, published in 1895, in which the Time Traveller moves forward to 802,701 AD. There he finds humanity has evolved into the Eloi and Morlocks, where the Eloi are small but leisured fruitarians and the Morlocks live below ground, carry out the work and have a different diet. Escaping the Morlocks, he travels millions of years into the future, where the environment no longer supports humanity. The image above is from a painting by Anton Brzezinski of a scene from The Time Machine, with the Time Traveller meeting the Eloi With Simon Schaffer Professor of History of Science at Cambridge University Amanda Rees Historian of science at the University of York And Simon James Professor in the Department of English Studies at Durham University Producer: Simon Tillotson

Melvyn Bragg and guests discuss the ideas of Jean-Jacques Rousseau (1712-1778) on the education of children, as set out in his novel or treatise Emile, published in 1762. He held that children are born with natural goodness, which he sought to protect as they developed, allowing each to form their own conclusions from experience, avoiding the domineering influence of others. In particular, he was keen to stop infants forming the view that human relations were based on domination and subordination. Rousseau viewed Emile as his most imporant work, and it became very influential. It was also banned and burned, and Rousseau was attacked for not following these principles with his own children, who he abandoned, and for proposing a subordinate role for women in this scheme. The image above is of Emile playing with a mask on his mother's lap, from a Milanese edition published in 1805. With Richard Whatmore Professor of Modern History at the University of St Andrews and Co-Director of the St Andrews Institute of Intellectual History Caroline Warman Professor of French Literature and Thought at Jesus College, Oxford and Denis McManus Professor of Philosophy at the University of Southampton Producer: Simon Tillotson

Melvyn Bragg and guests discuss the work and ideas of Dorothy Crowfoot Hodgkin (1910-1994), awarded the Nobel Prize in Chemistry in 1964 for revealing the structures of vitamin B12 and penicillin and who later determined the structure of insulin. She was one of the pioneers of X-ray crystallography and described by a colleague as 'a crystallographers' crystallographer'. She remains the only British woman to have won a Nobel in science, yet rejected the idea that she was a role model for other women, or that her career was held back because she was a woman. She was also the first woman since Florence Nightingale to receive the Order of Merit, and was given the Lenin Peace Prize in recognition of her efforts to bring together scientists from the East and West in pursuit of nuclear disarmament. With Georgina Ferry Science writer and biographer of Dorothy Hodgkin Judith Howard Professor of Chemistry at Durham University and Patricia Fara Fellow of Clare College, Cambridge Producer: Simon Tillotson

Melvyn Bragg and guests discuss the ideas developed by the Anglican priest John Nelson Darby (1800-1882), drawn from his reading of scripture, in which Jesus would suddenly take His believers up into the air, and those left behind would suffer on Earth until He returned with His church to rule for a thousand years before Final Judgement. Some believers would look for signs that civilization was declining, such as wars and natural disasters, or for new Roman Empires that would harbour the Antichrist, and from these predict the time of the Rapture. Darby helped establish the Plymouth Brethren, and later his ideas were picked up in the Scofield Reference Bible (1909) and soon became influential, particularly in the USA. With Elizabeth Phillips Research Fellow at the Margaret Beaufort Institute at the University of Cambridge and Honorary Fellow in the Department of Theology and Religion at Durham University Crawford Gribben Professor of Early Modern British History at Queen’s University Belfast and Nicholas Guyatt Reader in North American History at the University of Cambridge Producer: Simon Tillotson

Melvyn Bragg and guests discuss how, in September 1812, Napoleon captured Moscow and waited a month for the Russians to meet him, to surrender and why, to his dismay, no-one came. Soon his triumph was revealed as a great defeat; winter was coming, supplies were low; he ordered his Grande Armée of six hundred thousand to retreat and, by the time he crossed back over the border, desertion, disease, capture, Cossacks and cold had reduced that to twenty thousand. Napoleon had shown his weakness; his Prussian allies changed sides and, within eighteen months they, the Russians and Austrians had captured Paris and the Emperor was exiled to Elba. With Janet Hartley Professor Emeritus of International History, LSE Michael Rowe Reader in European History, King’s College London And Michael Rapport Reader in Modern European History, University of Glasgow Producer: Simon Tillotson

Melvyn Bragg and guests discuss the Spanish poet and playwright Federico Garcia Lorca (1898-1936), author of Blood Wedding, Yerma and The House of Bernarda Alba, who mixed the traditions of Andalusia with the avant-garde. He found his first major success with his Gypsy Ballads, although Dali, once his close friend, mocked him for these, accusing Lorca of being too conservative. He preferred performing his poems to publishing them, and his plays marked a revival in Spanish theatre. He was captured and killed by Nationalist forces at the start of the Civil War, his body never recovered, and it's been suggested this was punishment for his politics and for being openly gay. He has since been seen as the most important Spanish playwright and poet of the last century. With Maria Delgado Professor of Creative Arts at the Royal Central School of Speech and Drama, University of London Federico Bonaddio Reader in Modern Spanish at King’s College London And Sarah Wright Professor of Hispanic Studies and Screen Arts at Royal Holloway, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the people, plants and animals once living on land now under the North Sea, now called Doggerland after Dogger Bank, inhabited up to c7000BC or roughly 3000 years before the beginnings of Stonehenge. There are traces of this landscape at low tide, such as the tree stumps at Redcar (above); yet more is being learned from diving and seismic surveys which are building a picture of an ideal environment for humans to hunt and gather, with rivers and wooded hills. Rising seas submerged this land as glaciers melted, and the people and animals who lived there moved to higher ground, with the coasts of modern-day Britain on one side and Denmark, Germany, The Netherlands, Belgium and France on the other. With Vince Gaffney Anniversary Professor of Landscape Archaeology at the University of Bradford Carol Cotterill Marine Geoscientist at the British Geological Survey And Rachel Bynoe Lecturer in Archaeology at the University of Southampton Producer: Simon Tillotson

Melvyn Bragg and guests discuss why Athenians decided to send a fast ship to Lesbos in 427BC, rowing through the night to catch one they sent the day before. That earlier ship had instructions to kill all adult men in Mytilene, after their unsuccessul revolt against Athens, as a warning to others. The later ship had orders to save them, as news of their killing would make others fight to the death rather than surrender. Thucydides retells this in his History of the Peloponnesian War as an example of Athenian democracy in action, emphasising the right of Athenians to change their minds in their own interests, even when a demagogue argued they were bound by their first decision. With Angela Hobbs Professor of the Public Understanding of Philosophy at the University of Sheffield Lisa Irene Hau Senior Lecturer in Classics at the University of Glasgow And Paul Cartledge Emeritus AG Leventis Professor of Greek Culture, University of Cambridge and Senior Research Fellow of Clare College Producer: Simon Tillotson

Melvyn Bragg and guests discuss how the people of Cusco, in modern Peru, established an empire along the Andes down to the Pacific under their supreme leader Pachacuti. Before him, their control grew slowly from C13th and was at its peak after him when Pizarro arrived with his Conquistadors and captured their empire for Spain in 1533. The image, above, is of Machu Picchu which was built for emperor Pachacuti as an estate in C15th. With Frank Meddens Visiting Scholar at the University of Reading Helen Cowie Senior Lecturer in History at the University of York And Bill Sillar Senior Lecturer at the Institute of Archaeology at University College London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the range, depth and style of Browne (1605-82) , a medical doctor whose curious mind drew him to explore and confess his own religious views, challenge myths and errors in science and consider how humans respond to the transience of life. His Religio Medici became famous throughout Europe and his openness about his religion, in that work, was noted as rare when others either kept quiet or professed orthodox views. His Pseudodoxia Epidemica challenged popular ideas, whether about the existence of mermaids or if Adam had a navel, and his Hydriotaphia or Urn Burial was a meditation on what matters to humans when handling the dead. In 1923, Virginia Woolf wrote, "Few people love the writings of Sir Thomas Browne, but those that do are the salt of the earth." He also contributed more words to the English language than almost anyone, such as electricity, indigenous, medical, ferocious, carnivorous ambidextrous and migrant. With Claire Preston Professor of Renaissance Literature at Queen Mary University of London Jessica Wolfe Professor of English and Comparative Literature at the University of North Carolina at Chapel Hill And Kevin Killeen Professor of English at the University of York Producer: Simon Tillotson

Melvyn Bragg and guests discuss the impact of Grant's presidency on Americans in the years after the Civil War in which he, with Lincoln, had led the Union Army to victory. His predecessor, Andrew Johnson, was prepared to let the Southern States decide for themselves which rights to allow freed slaves; Grant supported equal rights, and he used troops and Enforcement Acts to defeat the Ku klux Klan which was violently suppressing African Americans. In later years Grant was remembered mainly for the corruption scandals under his terms of office, and for his failure to support or protect Native Americans, but in more recent decades his support for reconstruction has prompted a reassessement. With Erik Mathisen Lecturer in US History at the University of Kent Susan-Mary Grant Professor of American History at Newcastle University and Robert Cook Professor of American History at the University of Sussex Producer: Simon Tillotson

Melvyn Bragg and guests discuss how scientists sought to understand the properties of gases and the relationship between pressure and volume, and what that search unlocked. Newton theorised that there were static particles in gases that pushed against each other all the harder when volume decreased, hence the increase in pressure. Those who argued that molecules moved, and hit each other, were discredited until James Maxwell and Ludwig Boltzmann used statistics to support this kinetic theory. Ideas about atoms developed in tandem with this, and it came as a surprise to scientists in C20th that the molecules underpinning the theory actually existed and were not simply thought experiments. The image above is of Ludwig Boltzmann from a lithograph by Rudolf Fenzl, 1898 With Steven Bramwell Professor of Physics at University College London Isobel Falconer Reader in History of Mathematics at the University of St Andrews and Ted Forgan Emeritus Professor of Physics at the University of Birmingham Producer: Simon Tillotson

Melvyn Bragg and guests discuss the French philosopher Henri Bergson (1859-1941) and his ideas about human experience of time passing and how that differs from a scientific measurement of time, set out in his thesis on 'Time and Free Will' in 1889. He became famous in France and abroad for decades, rivalled only by Einstein and, in the years after the Dreyfus Affair, was the first ever Jewish member of the Académie Française. It's thought his work influenced Proust and Woolf, and the Cubists. He died in 1941 from a cold which, reputedly, he caught while queuing to register as a Jew, refusing the Vichy government's offer of exemption. With Keith Ansell-Pearson Professor of Philosophy at the University of Warwick Emily Thomas Assistant Professor in Philosophy at Durham University And Mark Sinclair Reader in Philosophy at the University of Roehampton Producer: Simon Tillotson

Melvyn Bragg and guests discuss the most destructive riots in London's history, which reached their peak on 7th June 1780 as troops fired on the crowd outside the Bank of England. The leader was Lord George Gordon, head of the Protestant Association, who objected to the relaxing of laws against Catholics. At first the protest outside Parliament was peaceful but, when Gordon's petition failed to persuade the Commons, rioting continued for days until the military started to shoot suspects in the street. It came as Britain was losing the war to hold on to colonies in North America. The image above shows a crowd setting fire to Newgate Prison and freeing prisoners by the authority of 'His Majesty, King Mob.' With Ian Haywood Professor of English at the University of Roehampton Catriona Kennedy Senior Lecturer in Modern British and Irish History and Director of the Centre for Eighteenth Century Studies at the University of York and Mark Knights Professor of History at the University of Warwick Producer: Simon Tillotson

Melvyn Bragg and guests discuss the life of Nero (37-68 AD) who became Emperor at the age of 16. At first he was largely praised for his generosity yet became known for his debauched lifestyle, with allegations he started the Fire of Rome, watching the flames as he played the lyre. Christians saw him as their persecutor, an anti-Christ, and the number of the Beast in the Book of Revelation was thought to indicate Nero. He had confidence in his own artistry, took up acting (which then had a very low status) and, as revolts in the empire grew, killed himself after the Senate condemned him to die as a slave, on a cross. With Maria Wyke Professor of Latin at University College London Matthew Nicholls Fellow and Senior Tutor at St John’s College, University of Oxford And Shushma Malik Lecturer in Classics at the University of Roehampton Producer: Simon Tillotson

Melvyn Bragg and guests discuss one of Shakespeare's most popular works, written c1595 in the last years of Elizabeth I. It is a comedy of love and desire and their many complications as well as their simplicity, and a reflection on society's expectations and limits. It is also a quiet critique of Elizabeth and her vulnerability and on the politics of the time, and an exploration of the power of imagination. With Helen Hackett Professor of English Literature and Leverhulme Research Fellow at University College London Tom Healy Professor of Renaissance Studies at the University of Sussex and Alison Findlay Professor of Renaissance Drama at Lancaster University and Chair of the British Shakespeare Association Producer: Simon Tillotson

Melvyn Bragg and guests discuss theories about the origins of teeth in vertebrates, and what we can learn from sharks in particular and their ancestors. Great white sharks can produce up to 100,000 teeth in their lifetimes. For humans, it is closer to a mere 50 and most of those have to last from childhood. Looking back half a billion years, though, the ancestors of sharks and humans had no teeth in their mouths at all, nor jaws. They were armoured fish, sucking in their food. The theory is that either their tooth-like scales began to appear in mouths as teeth, or some of their taste buds became harder. If we knew more about that, and why sharks can regenerate their teeth, then we might learn how humans could grow new teeth in later lives. With Gareth Fraser Assistant Professor in Biology at the University of Florida Zerina Johanson Merit Researcher in the Department of Earth Sciences at the Natural History Museum and Philip Donoghue Professor of Palaeobiology at the University of Bristol Producer: Simon Tillotson

Melvyn Bragg and guests discuss why the potato crop failures in the 1840s had such a catastrophic impact in Ireland. It is estimated that one million people died from disease or starvation after the blight and another two million left the country within the decade. There had been famines before, but not on this scale. What was it about the laws, attitudes and responses that made this one so devastating? The image above is from The Illustrated London News, Dec. 29, 1849, showing a scalp or shelter, "a hole, surrounded by pools, and three sides of the scalp were dripping with water, which ran in small streams over the floor and out by the entrance. The poor inhabitants said they would be thankful if the landlord would leave them there, and the Almighty would spare their lives. Its principal tenant is Margaret Vaughan." With Cormac O'Grada Professor Emeritus in the School of Economics at University College Dublin Niamh Gallagher University Lecturer in Modern British and Irish History at the University of Cambridge And Enda Delaney Professor of Modern History and School Director of Research at the University of Edinburgh Producer: Simon Tillotson

Melvyn Bragg and guests discuss the effective partition of England in the 880s after a century of Viking raids, invasions and settlements. Alfred of Wessex, the surviving Anglo-Saxon king and Guthrum, a Danish ruler, had fought each other to a stalemate and came to terms, with Guthrum controlling the land to the east (once he had agreed to convert to Christianity). The key strategic advantage the invaders had was the Viking ships which were far superior and enabled them to raid from the sea and up rivers very rapidly. Their Great Army had arrived in the 870s, conquering the kingdom of Northumbria and occupying York. They defeated the king of Mercia and seized part of his land. They killed the Anglo-Saxon king of East Anglia and gained control of his territory. It was only when a smaller force failed to defeat Wessex that the Danelaw came into being, leaving a lasting impact on the people and customs of that area. With Judith Jesch Professor of Viking Studies at the University of Nottingham John Hines Professor of Archaeology at Cardiff University And Jane Kershaw ERC Principal Investigator in Archaeology at the University of Oxford Producer: Simon Tillotson

Melvyn Bragg and guests discuss the life and works of Hopkins (1844-89), a Jesuit priest who at times burned his poems and at others insisted they should not be published. His main themes are how he, nature and God relate to each other. His friend Robert Bridges preserved Hopkins' poetry and, once printed in 1918, works such as The Windhover, Pied Beauty and As Kingfishers Catch Fire were celebrated for their inventiveness and he was seen as a major poet, perhaps the greatest of the Victorian age. With Catherine Phillips R J Owens Fellow in English at Downing College, University of Cambridge Jane Wright Senior Lecturer in English Literature at the University of Bristol and Martin Dubois Assistant Professor in Nineteenth Century Literature at Durham University Producer: Simon Tillotson

Melvyn Bragg and guests dicuss what it means to be oneself, a question explored by philosophers from Aristotle to the present day, including St Augustine, Kierkegaard, Heidegger and Sartre. In Hamlet, Polonius said 'To thine own self be true', but what is the self, and what does it mean to be true to it, and why should you be true? To Polonius, if you are true to yourself, ‘thou canst not be false to any man’ - but with the rise of the individual, authenticity became a goal in itself, regardless of how that affected others. Is authenticity about creating yourself throughout your life, or fulfilling the potential with which you were born, connecting with your inner child, or something else entirely? What are the risks to society if people value authenticity more than morality - that is, if the two are incompatible? The image above is of Sartre, aged 8 months, perhaps still connected to his inner child. With Sarah Richmond Associate Professor in Philosophy at University College London Denis McManus Professor of Philosophy at the University of Southampton and Irene McMullin Senior Lecturer in Philosophy at the University of Essex Producer: Simon Tillotson

Melvyn Bragg and guests discuss the impact on the British Isles of William Cecil, 1st Baron Burghley, the most poweful man in the court of Elizabeth I. He was both praised and attacked for his flexibility, adapting to the reigns of Protestant and Catholic monarchs and, under Elizabeth, his goal was to make England strong, stable and secure from attack from its neighbours. He sought control over Ireland and persuaded Elizabeth that Mary Queen of Scots must die, yet often counselled peace rather than war in the interests of prosperity. With Diarmaid MacCulloch Professor of the History of the Church at the University of Oxford Susan Doran Professor of Early Modern British History at the University of Oxford and John Guy Fellow of Clare College, University of Cambridge Producer: Simon Tillotson

Melvyn Bragg and guests discuss the life, works, context and legacy of Antarah (525-608AD), the great poet and warrior. According to legend, he was born a slave; his mother was an Ethiopian slave, his father an elite Arab cavalryman. Antarah won his freedom in battle and loved a woman called Abla who refused him, and they were later celebrated in the saga of Antar and Abla. One of Antarah's poems was so esteemed in pre-Islamic Arabia that it is believed it was hung up on the wall of the Kaaba in Mecca. With James Montgomery Sir Thomas Adams's Professor of Arabic at the University of Cambridge Marlé Hammond Senior Lecturer in Arabic Popular Literature and Culture at SOAS, University of London And Harry Munt Lecturer in Medieval History at the University of York Producer: Simon Tillotson

Melvyn Bragg and guests discuss how members of the same species send each other invisible chemical signals to influence the way they behave. Pheromones are used by species across the animal kingdom in a variety of ways, such as laying trails to be followed, to raise the alarm, to scatter from predators, to signal dominance and to enhance attractiveness and, in honey bees, even direct development into queen or worker. The image above is of male and female ladybirds that have clustered together in response to pheromones. With Tristram Wyatt Senior Research Fellow at the Department of Zoology at the University of Oxford Jane Hurst William Prescott Professor of Animal Science at the University of Liverpool and Francis Ratnieks Professor of Apiculture and Head of the Laboratory of Apiculture and Social Insects at the University of Sussex Producer: Simon Tillotson

Melvyn Bragg and guests discuss how artists from the Middle Ages onwards have been inspired by the Bible story of the widow who killed an Assyrian general who was besieging her village, and so saved her people from his army and from his master Nebuchadnezzar. A symbol of a woman's power and the defiance of political tyranny, the image of Judith has been sculpted by Donatello, painted on the ceiling of the Sistine Chapel and, in the case of Caravaggio, Liss and Artemisia Gentileschi, been shown with vivid, disturbing detail. What do these interpretations reveal of the attitudes to power and women in their time, and of the artists' own experiences? The image of Judith, above is from a tapestry in the Duomo, Milan, by Giovanni or Nicola Carcher, 1555 With Susan Foister Curator of Early Netherlandish, German and British Painting at the National Gallery John Gash Senior Lecturer in History of Art at the University of Aberdeen And Ela Nutu Hall Research Associate at the Sheffield Institute for Interdisciplinary Biblical Studies, at the University of Sheffield Producer: Simon Tillotson

Melvyn Bragg and guests discuss the remarkable achievement of Aristotle (384-322BC) in the realm of biological investigation, for which he has been called the originator of the scientific study of life. Known mainly as a philosopher and the tutor for Alexander the Great, who reportedly sent him animal specimens from his conquests, Aristotle examined a wide range of life forms while by the Sea of Marmara and then on the island of Lesbos. Some ideas, such as the the spontaneous generation of flies, did not survive later scrutiny, yet his influence was extraordinary and his work was unequalled until the early modern period. The image above is of the egg and embryo of a dogfish, one of the animals Aristotle described accurately as he recorded their development. With Armand Leroi Professor of Evolutionary Development Biology at Imperial College London Myrto Hatzimichali Lecturer in Classics at the University of Cambridge And Sophia Connell Lecturer in Philosophy at Birkbeck, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the life of the Welsh nobleman, also known as Owen Glendower, who began a revolt against Henry IV in 1400 which was at first very successful. Glyndwr (c1359-c1415) adopted the title Prince of Wales and established a parliament and his own foreign policy, until he was defeated by the future Henry V. Owain Glyndwr escaped and led guerilla attacks for several years but was never betrayed to the English, disappearing without trace. With Huw Pryce Professor of Welsh History at Bangor University Helen Fulton Professor of Medieval Literature at the University of Bristol Chris Given-Wilson Emeritus Professor of Medieval History at the University of St Andrews Producer: Simon Tillotson

Melvyn Bragg and guests discuss the ideas and life of one of the greatest mathematicians of the 20th century, Emmy Noether. Noether’s Theorem is regarded as one of the most important mathematical theorems, influencing the evolution of modern physics. Born in 1882 in Bavaria, Noether studied mathematics at a time when women were generally denied the chance to pursue academic careers and, to get round objections, she spent four years lecturing under a male colleague’s name. In the 1930s she faced further objections to her teaching, as she was Jewish, and she left for the USA when the Nazis came to power. Her innovative ideas were to become widely recognised and she is now considered to be one of the founders of modern algebra. With Colva Roney Dougal Professor of Pure Mathematics at the University of St Andrews David Berman Professor in Theoretical Physics at Queen Mary, University of London Elizabeth Mansfield Professor of Mathematics at the University of Kent Producer: Simon Tillotson

Melvyn Bragg and guests discuss Samuel Beckett (1906 - 1989), who lived in Paris and wrote his plays and novels in French, not because his French was better than his English, but because it was worse. In works such as Waiting for Godot, Endgame, Molloy and Malone Dies, he wanted to show the limitations of language, what words could not do, together with the absurdity and humour of the human condition. In part he was reacting to the verbal omnipotence of James Joyce, with whom he’d worked in Paris, and in part to his experience in the French Resistance during World War 2, when he used code, writing not to reveal meaning but to conceal it. With Steven Connor Professor of English at the University of Cambridge Laura Salisbury Professor of Modern Literature at the University of Exeter And Mark Nixon Associate Professor in Modern Literature at the University of Reading and co-director of the Beckett International Foundation Producer: Simon Tillotson

Melvyn Bragg and guests discuss why, in 1870, the Vatican Council issued the decree ‘pastor aeternus’ which, among other areas, affirmed papal infallibility. It meant effectively that the Pope could not err in his teachings, an assertion with its roots in the early Church when the bishop of Rome advanced to being the first among equals, then overall head of the Christian Church in the West. The idea that the Pope could not err had been a double-edged sword from the Middle Ages, though; while it apparently conveyed great power, it also meant a Pope was constrained by whatever a predecessor had said. If a later Pope were to contradict an earlier Pope, then one of them must be wrong, and how could that be…if both were infallible? With Tom O’Loughlin Professor of Historical Theology at the University of Nottingham Rebecca Rist Professor in Medieval History at the University of Reading And Miles Pattenden Departmental Lecturer in Early Modern History at the University of Oxford Producer: Simon Tillotson and Julia Johnson

Melvyn Bragg and guests discuss the planet Venus which is both the morning star and the evening star, rotates backwards at walking speed and has a day which is longer than its year. It has long been called Earth’s twin, yet the differences are more striking than the similarities. Once imagined covered with steaming jungles and oceans, we now know the surface of Venus is 450 degrees celsius, and the pressure there is 90 times greater than on Earth, enough to crush an astronaut. The more we learn of it, though, the more we learn of our own planet, such as whether Earth could become more like Venus in some ways, over time. With Carolin Crawford Public Astronomer at the Institute of Astronomy and Fellow of Emmanuel College, University of Cambridge Colin Wilson Senior Research Fellow in Planetary Science at the University of Oxford And Andrew Coates Professor of Physics at Mullard Space Science Laboratory, University College London Produced by: Simon Tillotson and Julia Johnson

Melvyn Bragg and guests discuss how, from 1834, poor people across England and Wales faced new obstacles when they could no longer feed or clothe themselves, or find shelter. Parliament, in line with the ideas of Jeremy Bentham and Thomas Malthus, feared hand-outs had become so attractive, they stopped people working to support themselves, and encouraged families to have more children than they could afford. To correct this, under the New Poor Laws it became harder to get any relief outside a workhouse, where families would be separated, husbands from wives, parents from children, sisters from brothers. Many found this regime inhumane, while others protested it was too lenient, and it lasted until the twentieth century. The image above was published in 1897 as New Year's Day in the Workhouse. With Emma Griffin Professor of Modern British History at the University of East Anglia Samantha Shave Lecturer in Social Policy at the University of Lincoln And Steven King Professor of Economic and Social History at the University of Leicester Producer: Simon Tillotson

In a programme first broadcast in 2018, Melvyn Bragg and guests discuss one of the jewels of medieval English poetry. It was written c1400 by an unknown poet and then was left hidden in private collections until the C19th when it emerged. It tells the story of a giant green knight who disrupts Christmas at Camelot, daring Gawain to cut off his head with an axe if he can do the same to Gawain the following year. Much to the surprise of Arthur's court, who were kicking the green head around, the decapitated body reaches for his head and rides off, leaving Gawain to face his promise and his apparently inevitable death the following Christmas. The illustration above is ©British Library Board Cotton MS Nero A.x, article 3, ff.94v95 With Laura Ashe Professor of English Literature at Worcester College, University of Oxford Ad Putter Professor of Medieval English Literature at the University of Bristol And Simon Armitage Poet and Professor of Poetry at the Universities of Leeds and Oxford Producer: Simon Tillotson

Melvyn Bragg and guests discuss the war in Europe which begain in 1618 and continued on such a scale and with such devastation that its like was not seen for another three hundred years. It pitched Catholics against Protestants, Lutherans against Calvinists and Catholics against Catholics across the Holy Roman Empire, drawing in their neighbours and it lasted for thirty gruelling years, from the Defenestration of Prague to the Peace of Westphalia of 1648. Many more civilians died than soldiers, and famine was so great that even cannibalism was excused. This topic was chosen from several hundred suggested by listeners this autumn. The image above is a detail from a painting of The Battle of White Mountain on 7-8 November 1620, by Pieter Snayers (1592-1667) With Peter Wilson Chichele Professor of the History of War at the University of Oxford Ulinka Rublack Professor of Early Modern European History at the University of Cambridge and Fellow of St John’s College And Toby Osborne Associate Professor in History at Durham University Producer: Simon Tillotson

Melvyn Bragg and guests discuss a foundation story for China as it was reshaped under Mao Zedong. In October 1934, around ninety thousand soldiers of the Red Army broke out of a siege in Jiangxi in the south east of the country, hoping to find a place to regroup and rebuild. They were joined by other armies, and this turned into a very long march to the west and then north, covering thousands of miles of harsh and hostile territory, marshes and mountains, pursued by forces of the ruling Kuomintang for a year. Mao Zedong was among the marchers and emerged at the head of them, and he ensured the officially approved history of the Long March would be an inspiration and education for decades to come. With Rana Mitter Professor of the History and Politics of Modern China and Fellow of St Cross College, University of Oxford Sun Shuyun Historian, writer of 'The Long March' and film maker And Julia Lovell Professor in Modern Chinese History and Literature at Birkbeck, University of London Producer: Simon Tillotson

Melvyn Bragg and guests discuss the philosophy of hope. To the ancient Greeks, hope was closer to self-deception, one of the evils left in Pandora's box or jar, in Hesiod's story. In Christian tradition, hope became one of the theological virtues, the desire for divine union and the expectation of receiving it, an action of the will rather than the intellect. To Kant, 'what may I hope' was one of the three basic questions which human reason asks, while Nietzsche echoed Hesiod, arguing that leaving hope in the box was a deception by the gods, reflecting human inability to face the demands of existence. Yet even those critical of hope, like Camus, conceded that life was nearly impossible without it. With Beatrice Han-Pile Professor of Philosophy at the University of Essex Robert Stern Professor of Philosophy at the University of Sheffield And Judith Wolfe Professor of Philosophical Theology at the University of St Andrews Producer: Simon Tillotson

Melvyn Bragg and guests discuss Horace (65-8BC), who flourished under the Emperor Augustus. He was one of the greatest poets of his age and is one of the most quoted of any age. Carpe diem, nil desperandum, nunc est bibendum – that’s Horace. He was the son of a freedman from southern Italy and, thanks to his talent, achieved high status in Rome despite fighting on the losing side in the civil wars. His Odes are widely thought his most enduring works, yet he also wrote his scurrilous Epodes, some philosophical Epistles and broad Satires. He’s influenced poets ever since, including those such as Wilfred Owen who rejected his line: ‘dulce et decorum est pro patria mori’. With Emily Gowers Professor of Latin Literature at the University of Cambridge and Fellow of St John’s College William Fitzgerald Professor of Latin Language and Literature at King’s College London and Ellen O’Gorman Senior Lecturer in Classics at the University of Bristol Producer: Simon Tillotson

In a programme first broadcast in November 2018, Melvyn Bragg and guests discuss the Austrian princess Maria Antonia, child bride of the future French King Louis XVI. Their marriage was an attempt to bring about a major change in the balance of power in Europe and to undermine the influence of Prussia and Great Britain, but she had no say in the matter and was the pawn of her mother, the Empress Maria Theresa. She fulfilled her allotted role of supplying an heir, but was sent to the guillotine in 1793 in the French Revolution, a few months after her husband, following years of attacks on her as a woman who, it was said, betrayed the King and as a foreigner who betrayed France to enemy powers. When not doing these wrongs, she was said to be personally bankrupting France. Her death shocked royal families throughout Europe, and she became a powerful symbol of the consequences of the Revolution. With Catriona Seth Marshal Foch Professor of French Literature at the University of Oxford Katherine Astbury Professor of French Studies at the University of Warwick and David McCallam Reader in French Eighteenth-Century Studies at the University of Sheffield Producer: Simon Tillotson

Melvyn Bragg and guests discuss the properties of atoms or molecules with a single unpaired electron, which tend to be more reactive, keen to seize an electron to make it a pair. In the atmosphere, they are linked to reactions such as rusting. Free radicals came to prominence in the 1950s with the discovery that radiation poisoning operates through free radicals, as it splits water molecules and produces a very reactive hydroxyl radical which damages DNA and other molecules in the cell. There is also an argument that free radicals are a byproduct of normal respiration and over time they cause an accumulation of damage that is effectively the process of ageing. For all their negative associations, free radicals play an important role in signalling and are also linked with driving cell division, both cancer and normal cell division, even if they tend to become damaging when there are too many of them. With Nick Lane Professor of Evolutionary Biochemistry at University College London Anna Croft Associate Professor at the Department of Chemical and Environmental Engineering at the University of Nottingham And Mike Murphy Professor of Mitochondrial Redox Biology at Cambridge University Producer: Simon Tillotson

Melvyn Bragg and guests discuss Bernard Mandeville (1670-1733) and his critique of the economy as he found it in London, where private vices were condemned without acknowledging their public benefit. In his poem The Grumbling Hive (1705), he presented an allegory in which the economy collapsed once knavish bees turned honest. When republished with a commentary, The Fable of the Bees was seen as a scandalous attack on Christian values and Mandeville was recommended for prosecution for his tendency to corrupt all morals. He kept writing, and his ideas went on to influence David Hume and Adam Smith, as well as Keynes and Hayek. With David Wootton Anniversary Professor of History at the University of York Helen Paul Lecturer in Economics and Economic History at the University of Southampton And John Callanan Senior Lecturer in Philosophy at King’s College London Producer: Simon Tillotson

In the second of two programmes marking In Our Time's 20th anniversary on 15th October, Melvyn Bragg and guests discuss Shakespeare's versions of history, continuing with the Roman plays. Rome was the setting for Titus Andronicus, Julius Caesar, Coriolanus and parts of Antony and Cleopatra and these plays gave Shakespeare the chance to explore ideas too controversial for English histories. How was Shakespeare reimagining Roman history, and what impact has that had on how we see Rome today? The image above is of Marlon Brando playing Mark Antony in a scene from the film version of Shakespeare's Julius Caesar, 1953 With Sir Jonathan Bate Provost of Worcester College, University of Oxford Catherine Steel Professor of Classics and Dean of Research in the College of Arts at the University of Glasgow And Patrick Gray Associate Professor of English Studies at Durham University Producer: Simon Tillotson

In the first of two programmes marking In Our Time's 20th anniversary on 15th October, Melvyn Bragg and guests discuss Shakespeare's versions of history, starting with the English Plantagenets. His eight plays from Richard II to Richard III were written out of order, in the Elizabethan era, and have had a significant impact on the way we see those histories today. In the second programme, Melvyn discusses the Roman plays. The image above is of Richard Burton (1925 - 1984) as Henry V in the Shakespeare play of the same name, from 1951 With Emma Smith Professor of Shakespeare Studies at Hertford College, University of Oxford Gordon McMullan Professor of English at King’s College London and Director of the London Shakespeare Centre And Katherine Lewis Senior Lecturer in Medieval History at the University of Huddersfield Producer: Simon Tillotson

Melvyn Bragg and guests discuss the works of Wharton (1862-1937) such as The Age of Innocence for which she won the Pulitzer Prize and was the first woman to do so, The House of Mirth, and The Custom of the Country. Her novels explore the world of privileged New Yorkers in the Gilded Age of the late C19th, of which she was part, drawing on her own experiences and written from the perspective of the new century, either side of WW1 . Among her themes, she examined the choices available to women and the extent to which they could ever really be free, even if rich. With Dame Hermione Lee Biographer, former President of Wolfson College, Oxford Bridget Bennett Professor of American Literature and Culture at the University of Leeds And Laura Rattray Reader in North American Literature at the University of Glasgow Producer: Simon Tillotson

Melvyn Bragg and guests discuss the ideas and life of the German theologian, born in Breslau/Wroclaw in 1906 and killed in the Flossenbürg concentration camp on 9th April 1945. Bonhoeffer developed ideas about the role of the Church in the secular world, in particular Germany after the Nazis took power in 1933 and demanded the Churches' support. He strongly opposed anti-Semitism and, with a role in the Military Intelligence Department, took part in the resistance, plotting to kill Hitler and meeting with contacts in the Allies. Bonhoeffer's ideas on Christian ethics and the relationship between Christianity and humanism spread more widely from the 1960s with the discovery of unpublished works, including those written in prison as he awaited execution. With Stephen Plant Dean and Runcie Fellow at Trinity Hall at the University of Cambridge Eleanor McLaughlin Lecturer in Theology and Ethics at the University of Winchester and Lecturer in Ethics at Regent’s Park College at the University of Oxford And Tom Greggs Marischal Chair of Divinity at the University of Aberdeen Producer: Simon Tillotson

Melvyn Bragg and guests discuss the history of real and imagined machines that appear to be living, and the questions they raise about life and creation. Even in myth they are made by humans, not born. The classical Greeks built some and designed others, but the knowledge of how to make automata and the principles behind them was lost in the Latin Christian West, remaining in the Greek-speaking and Arabic-speaking world. Western travellers to those regions struggled to explain what they saw, attributing magical powers. The advance of clockwork raised further questions about what was distinctly human, prompting Hobbes to argue that humans were sophisticated machines, an argument explored in the Enlightenment and beyond. The image above is Jacques de Vaucanson's mechanical duck (1739), which picked up grain, digested and expelled it. If it looks like a duck... with Simon Schaffer Professor of History of Science at Cambridge University Elly Truitt Associate Professor of Medieval History at Bryn Mawr College And Franziska Kohlt Doctoral Researcher in English Literature and the History of Science at the University of Oxford Producer: Simon Tillotson

Melvyn Bragg and guests discuss the great epic poem attributed to Homer, telling the story of an intense episode in the Trojan War. It is framed by the wrath of the Greek hero Achilles, insulted by his leader Agamemnon and withdrawing from the battle that continued to rage, only returning when his close friend Patroclus is killed by the Trojan hero Hector. Achilles turns his anger from Agamemnon to Hector and the fated destruction of Troy comes ever closer. With Edith Hall Professor of Classics at King's College London Barbara Graziosi Professor of Classics at Princeton University And Paul Cartledge A.G. Leventis Senior Research Fellow and Emeritus Professor of Greek Culture at Clare College, Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the ideas of William Morris, known in his lifetime for his poetry and then his contribution to the Arts and Crafts movement, and increasingly for his political activism. He felt the world had given in to drudgery and ugliness and he found inspiration in the time before industrialisation, in the medieval life which was about fellowship and association and ways of working which resisted the division of labour and allowed the worker to exercise his or her imagination. Seeing a disconnection between art and society, his solution was revolution which in his view was the only way to reset their relationship. The image above is from the Strawberry Thief wallpaper design by William Morris. With Ingrid Hanson Lecturer in 18th and 19th Century Literature at the University of Manchester Marcus Waithe University Senior Lecturer in English Literature at the University of Cambridge and Fellow of Magdalene College And Jane Thomas Professor of Victorian and Early 20th Century Literature at the University of Hull Producer: Simon Tillotson.

Melvyn and guests discuss the 1846-48 conflict after which the United States of Mexico lost half its territory to the United States of America. The US gained land covered by the states of Texas, Utah, California, New Mexico, Nevada, Arizona and part of Colorado. The outcome had a profound impact on Native Americans and led to civil war in defeated Mexico. It also raised the question of whether slavery would be legal in this acquired territory - something that would only be resolved in the US Civil War, which this victory hastened. With Frank Cogliano Professor of American History at the University of Edinburgh Jacqueline Fear-Segal Professor of American and Indigenous Histories at the University of East Anglia And Thomas Rath Lecturer in Latin American History at University College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss how some bats, dolphins and other animals emit sounds at high frequencies to explore their environments, rather than sight. This was such an unlikely possibility, to natural historians from C18th onwards, that discoveries were met with disbelief even into the C20th; it was assumed that bats found their way in the dark by touch. Not all bats use echolocation, but those that do have a range of frequencies for different purposes and techniques for preventing themselves becoming deafened by their own sounds. Some prey have evolved ways of detecting when bats are emitting high frequencies in their direction, and some fish have adapted to detect the sounds dolphins use to find them. With Kate Jones Professor of Ecology and Biodiversity at University College London Gareth Jones Professor of Biological Sciences at the University of Bristol And Dean Waters Lecturer in the Environment Department at the University of York Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the ideas of Charles-Louis de Secondat, Baron de La Brède et de Montesquieu (1689-1755) whose works on liberty, monarchism, despotism, republicanism and the separation of powers were devoured by intellectuals across Europe and New England in the eighteenth century, transforming political philosophy and influencing the American Constitution. He argued that an individual's liberty needed protection from the arm of power, checking that by another power; where judicial, executive and legislative power were concentrated in the hands of one figure, there could be no personal liberty. With Richard Bourke Professor in the History of Political Thought at Queen Mary, University of London Rachel Hammersley Senior Lecturer in Intellectual History at Newcastle University And Richard Whatmore Professor of Modern History at the University of St Andrews and Director of the St Andrews Institute of Intellectual History Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the role of the great 'City of the Persians' founded by Darius I as the ceremonial capital of the Achaemenid Empire that stretched from the Indus Valley to Egypt and the coast of the Black Sea. It was known as the richest city under the sun and was a centre at which the Empire's subject peoples paid tribute to a succession of Achaemenid leaders, until the arrival of Alexander III of Macedon who destroyed it by fire supposedly in revenge for the burning of the Acropolis in Athens. The image above is a detail from a relief at the Apadana, the huge audience hall, and shows a lion attacking a bull. With Lloyd Llewellyn-Jones Professor of Ancient History at Cardiff University Vesta Sarkhosh Curtis Curator of Middle Eastern Coins at the British Museum And Lindsay Allen Lecturer in Greek and Near Eastern History at King's College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the great Norwegian playwright and poet, best known for his middle class tragedies such as The Wild Duck, Hedda Gabler, A Doll's House and An Enemy of the People. These are set in a world where the middle class is dominant and explore the qualities of that life, its weaknesses and boundaries and the ways in which it takes away freedoms. It is the women who fare the worst in this society, something Ibsen explored in A Doll's House among others, a play that created a sensation with audiences shocked to watch a woman break free of her bourgeois family life to find her destiny. He explored dark secrets such as incest and, in Ghosts, hereditary syphilis, which attracted the censors. He gave actresses parts they had rarely had before, and audiences plays that, after Shakespeare, became the most performed in the world. With Tore Rem Professor of English Literature at the University of Oslo Kirsten Shepherd-Barr Professor of English and Theatre Studies and Tutorial Fellow, St Catherine's College at the University of Oxford And Dinah Birch Professor of English Literature and Pro-Vice Chancellor for Cultural Engagement at the University of Liverpool Producer: Simon Tillotson.

Melvyn Bragg and guests discuss one of the most remarkable queens of the Middle Ages who took control when her husband, Henry VI, was incapable. Margaret of Anjou (1430-1482) wanted Henry to stay in power for the sake of their son, the heir to the throne, and her refusal to back down was seen by her enemies as a cause of the great dynastic struggle of the Wars of the Roses. The image above is from the Talbot Shrewsbury Book, showing John Talbot, 1st Earl of Shrewsbury, presenting Margaret with that book on her betrothal to Henry With Katherine Lewis Senior Lecturer in Medieval History at the University of Huddersfield James Ross Reader in Late Medieval History at the University of Winchester And Joanna Laynesmith Visiting Research Fellow at the University of Reading Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the 1861 declaration by Tsar Alexander II that serfs were now legally free of their landlords. Until then, over a third of Russians were tied to the land on which they lived and worked and in practice there was little to distinguish their condition from slavery. Russia had lost the Crimean War in 1855 and there had been hundreds of uprisings, prompting the Tsar to tell the nobles, "The existing condition of owning souls cannot remain unchanged. It is better to begin to destroy serfdom from above than to wait until that time when it begins to destroy itself from below." Reform was constrained by the Tsar's wish to keep the nobles on side and, for the serfs, tied by debt and law to the little land they were then allotted, the benefits were hard to see. With Sarah Hudspith Associate Professor in Russian at the University of Leeds Simon Dixon The Sir Bernard Pares Professor of Russian History at UCL And Shane O'Rourke Senior Lecturer in History at the University of York Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the eleven stories of Celtic mythology and Arthurian romance known as The Mabinogion, most of which were told and retold for generations before being written down in C14th. Among them are stories of Pwyll and Rhiannon and their son Pryderi, of Culhwch and Olwen, of the dream of the Emperor Macsen, of Lludd and Llefelys, of magic and giants and imagined history. With common themes but no single author, they project an image of the Island of Britain before the Anglo-Saxons and Normans and before Edward I's conquest of Wales. They came to new prominence, worldwide, from C19th with the translation into English by Lady Charlotte Guest aided by William Owen Pughe. The image above is of Cynon ap Clydno approaching the Castle of Maidens from the tale of Owain, or the Lady of the Fountain With Sioned Davies Professor in the School of Welsh at Cardiff University Helen Fulton Professor of Medieval Literature at the University of Bristol And Juliette Wood Associate Lecturer in the School of Welsh at Cardiff University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the Berber people who grew to dominate the western Maghreb, founded Marrakesh and took control of Al-Andalus. They were desert people, wearing veils over their faces to keep out the sand, and they wanted a simpler form of Islam. They called themselves the Murabitun, the people who gathered together to fight the holy war, and they were tough fighters; the Spanish knight El Cid fought them and lost, and the legend that built around him said the Almoravids were terrible and had to be resisted. They kept back the Christians of northern Spain, so helping extend Muslim rule in the Iberian Peninsula, before they themselves were destroyed and replaced by their rivals, the Almohads, from the Atlas Mountains. The image above shows the interior of the cupola, Almoravid Koubba, Marrakesh (C11th) With Amira K Bennison Professor in the History and Culture of the Maghreb at the University of Cambridge Nicola Clarke Lecturer in the History of the Islamic World at Newcastle University And Hugh Kennedy Professor of Arabic at SOAS, University of London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the discovery and growing understanding of the Proton, formed from three quarks close to the Big Bang and found in the nuclei of all elements. The positive charges they emit means they attract the fundamental particles of negatively charged electrons, an attraction that leads to the creation of atoms which in turn leads to chemistry, biology and life itself. The Sun (in common with other stars) is a fusion engine that turn protons by a series of processes into helium, emitting energy in the process, with about half of the Sun's protons captured so far. Hydrogen atoms, stripped of electrons, are single protons which can be accelerated to smash other nuclei and have applications in proton therapy. Many questions remain, such as why are electrical charges for protons and electrons so perfectly balanced? With Frank Close Professor Emeritus of Physics at the University of Oxford Helen Heath Reader in Physics at the University of Bristol And Simon Jolly Lecturer in High Energy Physics at University College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss what Virginia Woolf called 'one of the few English novels written for grown-up people'. It was written by George Eliot, the pen name of Mary Anne Evans (1819-80), published in 8 parts in 1871-72, and was originally two separate stories which became woven together. One, 'Middlemarch', focused on a doctor, Tertius Lydgate and the other, 'Miss Brooke', on Dorothea Brooke who became the central figure in the finished work. The events are set in a small town in the Midlands, surrounded by farmland, leading up to the Reform Act 1832, and the novel explores the potential to change in matters of religion, social status, marriage and politics, and is particularly concerned with the opportunities available to women to lead fulfilling lives. The image above shows Rufus Sewell and Juliet Aubrey in the BBC adaptation, from 1994 With Rosemary Ashton Emeritus Quain Professor of English Language and Literature at University College London Kathryn Hughes Professor of Life Writing at the University of East Anglia And John Bowen Professor of Nineteenth-Century Literature at the University of York Producer: Simon Tillotson.

In a programme first broadcast on April 12th 2018, Melvyn Bragg and guests discuss the contribution of George Stephenson (1781-1848) and his son Robert (1803-59) to the development of the railways in C19th. George became known as The Father of Railways and yet arguably Robert's contribution was even greater, with his engineering work going far beyond their collaboration. Robert is credited with the main role in the design of their locomotives. George had worked on stationary colliery steam engines and, with Robert, developed the moving steam engine Locomotion No1 for the Stockton and Darlington Railway in 1825. They produced the Rocket for the Rainhill Trials on the Liverpool and Manchester Railway in 1829. From there, the success of their designs and engineering led to the expansion of railways across Britain and around the world. with Dr Michael Bailey Railway historian and editor of the most recent biography of Robert Stephenson Julia Elton Past President of the Newcomen Society for the History of Engineering and Technology and Colin Divall Professor Emeritus of Railway Studies at the University of York Producer: Simon Tillotson. This programme is a repeat

Melvyn Bragg and guests discuss the role of slavery in the Roman world, from its early conquests to the fall of the Western Empire. The system became so entrenched that no-one appeared to question it, following Aristotle's view that slavery was a natural state. Whole populations could be marched into slavery after military conquests, and the freedom that Roman citizens prized for themselves, even in poverty, was partly defined by how it contrasted with enslavement. Slaves could be killed or tortured with impunity, yet they could be given great responsibility and, once freed, use their contacts to earn fortunes. The relationship between slave and master informed early Christian ideas of how the faithful related to God, informing debate for centuries. With Neville Morley Professor of Classics and Ancient History at the University of Exeter Ulrike Roth Senior Lecturer in Ancient History at the University of Edinburgh And Myles Lavan Senior lecturer in Ancient History at the University of St Andrews Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Alexis de Tocqueville (1805-1859) and his examination of the American democratic system. He wrote De La Démocratie en Amérique in two parts, published in 1835 and 1840, when France was ruled by the July Monarchy of Louis-Philippe. Tocqueville was interested in how aspects of American democracy, in the age of President Andrew Jackson, could be applied to Europe as it moved away from rule by monarchs and aristocrats. His work has been revisited by politicians ever since, particularly in America, with its analysis of the strengths and weaknesses of direct democracy and its warnings of mediocrity and the tyranny of the majority. With Robert Gildea Professor of Modern History at the University of Oxford Susan-Mary Grant Professor of American History at Newcastle University and Jeremy Jennings Professor of Political Theory and Head of the School of Politics & Economics at King's College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss St Augustine of Hippo's account of his conversion to Christianity and his life up to that point. Written c397AD, it has many elements of autobiography with his scrutiny of his earlier life, his long relationship with a concubine, his theft of pears as a child, his work as an orator and his embrace of other philosophies and Manichaeism. Significantly for the development of Christianity, he explores the idea of original sin in the context of his own experience. The work is often seen as an argument for his Roman Catholicism, a less powerful force where he was living in North Africa where another form of Christianity was dominant, Donatism. While Augustine retells many episodes from his own life, the greater strength of his Confessions has come to be seen as his examination of his own emotional development, and the growth of his soul. With Kate Cooper Professor of History at the University of London and Head of History at Royal Holloway Morwenna Ludlow Professor of Christian History and Theology at the University of Exeter and Martin Palmer Visiting Professor in Religion, History and Nature at the University of Winchester Producer: Simon Tillotson.

Melvyn Bragg and guests discuss how and why Highlanders and Islanders were cleared from their homes in waves in C18th and C19th, following the break up of the Clans after the Battle of Culloden. Initially, landlords tried to keep people on their estates for money-making schemes, but the end of the Napoleonic Wars brought convulsive changes. Some of the evictions were notorious, with the sudden and fatal burning of townships, to make way for sheep and deer farming. For many, migration brought a new start elsewhere in Britain or in the British colonies, while for some it meant death from disease while in transit. After more than a century of upheaval, the Clearances left an indelible mark on the people and landscape of the Highlands and Western Isles. The image above is a detail from a print of 'Lochaber No More' by John Watson Nicol 1856-1926 With Sir Tom Devine Professor Emeritus of Scottish History at the University of Edinburgh Marjory Harper Professor of History at the University of Aberdeen and Visiting Professor at the University of the Highlands and Islands And Murray Pittock Bradley Professor of English Literature and Pro Vice Principal at the University of Glasgow Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the ideas attributed to Sun Tzu (544-496BC, according to tradition), a legendary figure from the beginning of the Iron Age in China, around the time of Confucius. He may have been the historical figure Sun Wu, a military adviser at the court of King Helu of Wu (who reigned between about 514 and 496 BC), one of the kings in power in the Warring States period of Chinese history (6th - 5th century BC). Sun Tzu was credited as the author of The Art of War, a work on military strategy that soon became influential in China and then Japan both for its guidance on conducting and avoiding war and for its approach to strategy generally. After The Art of War was translated into European languages in C18th, its influence spread to military academies around the world. The image above is of a terracotta warrior from the tomb of Qin Shi Huang, the first Emperor, who unified China after the Warring States period. With Hilde De Weerdt Professor of Chinese History at Leiden University Tim Barrett Professor Emeritus of East Asian History at SOAS, University of London And Imre Galambos Reader in Chinese Studies at the University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the pioneering scientist Rosalind Franklin (1920 - 1958). During her distinguished career, Franklin carried out ground-breaking research into coal and viruses but she is perhaps best remembered for her investigations in the field of DNA. In 1952 her research generated a famous image that became known as Photograph 51. When the Cambridge scientists Francis Crick and James Watson saw this image, it enabled them the following year to work out that DNA has a double-helix structure, one of the most important discoveries of modern science. Watson, Crick and Franklin's colleague Maurice Wilkins received a Nobel Prize in 1962 for this achievement but Franklin did not and today many people believe that Franklin has not received enough recognition for her work. With: Patricia Fara President of the British Society for the History of Science Jim Naismith Interim lead of the Rosalind Franklin Institute, Director of the Research Complex at Harwell and Professor at the University of Oxford Judith Howard Professor of Chemistry at Durham University Producer: Victoria Brignell.

Melvyn Bragg and guests discuss fungi. These organisms are not plants or animals but a kingdom of their own. Millions of species of fungi live on the Earth and they play a crucial role in ecosystems, enabling plants to obtain nutrients and causing material to decay. Without fungi, life as we know it simply would not exist. They are also a significant part of our daily life, making possible the production of bread, wine and certain antibiotics. Although fungi brought about the colonisation of the planet by plants about 450 million years ago, some species can kill humans and devastate trees. With: Lynne Boddy Professor of Fungal Ecology at Cardiff University Sarah Gurr Professor of Food Security in the Biosciences Department at the University of Exeter David Johnson N8 Chair in Microbial Ecology at the University of Manchester Producer: Victoria Brignell.

Melvyn Bragg and guests discuss the life and ideas of Frederick Douglass, who was born into slavery in Maryland in 1818 and, once he had escaped, became one of that century's most prominent abolitionists. He was such a good orator, his opponents doubted his story, but he told it in grim detail in 1845 in his book 'Narrative of the Life of Frederick Douglass, an American Slave.' He went on to address huge audiences in Great Britain and Ireland and there some of his supporters paid off his owner, so Douglass could be free in law and not fear recapture. After the Civil War and the abolition of slavery, he campaigned for equal rights for African-Americans, arguing against those such as Lincoln who had wanted freed slaves to leave America and found a colony elsewhere. "We were born here," he said, "and here we will remain." With Celeste-Marie Bernier Professor of Black Studies in the English Department at the University of Edinburgh Karen Salt Assistant Professor in Transnational American Studies at the University of Nottingham And Nicholas Guyatt Reader in North American History at the University of Cambridge Producer: Simon Tillotson.

The octopus, the squid, the nautilus and the cuttlefish are some of the most extraordinary creatures on this planet, intelligent and yet apparently unlike other life forms. They are cephalopods and are part of the mollusc family like snails and clams, and they have some characteristics in common with those. What sets them apart is the way members of their group can change colour, camouflage themselves, recognise people, solve problems, squirt ink, power themselves with jet propulsion and survive both on land, briefly, and in the deepest, coldest oceans. And, without bones or shells, they grow so rapidly they can outstrip their rivals when habitats change, making them the great survivors and adaptors of the animal world. With Louise Allcock Lecturer in Zoology at the National University of Ireland, Galway Paul Rodhouse Emeritus Fellow of the British Antarctic Survey and Jonathan Ablett Senior Curator of Molluscs at the Natural History Museum Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the ideas developed by Marcus Tullius Cicero (106-43BC) to support and reinvigorate the Roman Republic when, as it transpired, it was in its final years, threatened by civil wars, the rule of Julius Caesar and the triumvirates that followed. As Consul he had suppressed a revolt by Catiline, putting the conspirators to death summarily as he believed the Republic was in danger and that this danger trumped the right to a fair trial, a decision that rebounded on him. While in exile he began works on duty, laws, the orator and the republic. Although left out of the conspiracy to kill Caesar, he later defended that murder in the interests of the Republic, only to be murdered himself soon after. With Melissa Lane The Class of 1943 Professor of Politics at Princeton University and 2018 Carlyle Lecturer at the University of Oxford Catherine Steel Professor of Classics at the University of Glasgow And Valentina Arena Reader in Roman History at University College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the work, ideas and life of the Russian poet whose work was celebrated in C20th both for its quality and for what it represented, written under censorship in the Stalin years. Her best known poem, Requiem, was written after her son was imprisoned partly as a threat to her and, to avoid punishment for creating it, she passed it on to her supporters to be memorised, line by line, rather than written down. She was a problem for the authorities and became significant internationally, as her work came to symbolise resistance to political tyranny and the preservation of pre-Revolutionary liberal values in the Soviet era. The image above is based on 'Portrait of Anna Akhmatova' by N.I. Altman, 1914, Moscow With Katharine Hodgson Professor in Russian at the University of Exeter Alexandra Harrington Reader in Russian Studies at Durham University And Michael Basker Professor of Russian Literature and Dean of Arts at the University of Bristol Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the event of which Voltaire, two hundred years later, said 'nothing was more well known'. In 1565, Suleiman the Magnificent, the Ottoman leader, sent a great fleet west to lay siege to Malta and capture it for his empire. Victory would mean control of trade across the Mediterranean and a base for attacks on Spain, Sicily and southern Italy, even Rome. It would also mean elimination of Malta's defenders, the Knights Hospitaller, driven by the Ottomans from their base in Rhodes in 1522 and whose raids on his shipping had long been a thorn in his side. News of the Great Siege of Malta spread fear throughout Europe, though that turned to elation when, after four months of horrific fighting, the Ottomans withdrew, undermined by infighting between their leaders and the death of the highly-valued admiral, Dragut. The Knights Hospitaller had shown that Suleiman's forces could be contained, and their own order was reinvigorated. The image above is the Death of Dragut at the Siege of Malta (1867), after a painting by Giuseppe Cali. Dragut (1485 – 1565) was an Ottoman Admiral and privateer, known as The Drawn Sword of Islam and as one of the finest generals of the time. With Helen Nicholson Professor of Medieval History at Cardiff University Diarmaid MacCulloch Professor of the History of the Church at the University of Oxford and Kate Fleet Director of the Skilliter Centre for Ottoman Studies and Fellow of Newnham College, Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Shakespeare's best known, most quoted and longest play, written c1599 - 1602 and rewritten throughout his lifetime. It is the story of Hamlet, Prince of Denmark, encouraged by his father's ghost to take revenge on his uncle who murdered him, and is set at the court of Elsinore. In soliloquies, the Prince reveals his inner self to the audience while concealing his thoughts from all at the Danish court, who presume him insane. Shakespeare gives him lines such as 'to be or not to be,' 'alas, poor Yorick,' and 'frailty thy name is woman', which are known even to those who have never seen or read the play. And Hamlet has become the defining role for actors, men and women, who want to show their mastery of Shakespeare's work. The image above is from the 1964 film adaptation, directed by Grigori Kozintsev, with Innokenty Smoktunovsky as Hamlet. With Sir Jonathan Bate Provost of Worcester College, University of Oxford Carol Rutter Professor of Shakespeare and Performance Studies at the University of Warwick And Sonia Massai Professor of Shakespeare Studies at King's College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss one of the great composers, who was born into a family of musicians in Bonn. His grandfather was an eminent musician and also called Ludwig van Beethoven. His father, who was not as talented as Beethoven's grandfather, drank heavily and died when Beethoven was still young. It was his move to Vienna that allowed him to flourish, with the support at first of aristocratic patrons, when that city was the hub of European music. He is credited with developing the symphony further than any who preceded him, with elevating instrumental above choral music and with transforming music to the highest form of art. He composed his celebrated works while, from his late twenties onwards, becoming increasingly deaf. (Before the live broadcast, BBC Radio 3's Breakfast programme played selections from Beethoven, with Essential Classics playing more, immediately after, on the same network.) With Laura Tunbridge Professor of Music and Henfrey Fellow, St Catherine's College, University of Oxford John Deathridge Emeritus King Edward Professor of Music at King's College London And Erica Buurman Senior Lecturer in Music, Canterbury Christchurch University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the man who was Henry II's Chancellor and then Archbishop of Canterbury and who was murdered by knights in Canterbury Cathedral (depicted by Matthew Paris, above). Henry believed that Becket owed him loyalty as he had raised him to the highest offices, and that he should agree to Henry's courts having jurisdiction over 'criminous clerics'. They fell out when Becket agreed to this jurisdiction verbally but would not put his seal on the agreement, the Constitutions of Clarendon. The rift deepened when Henry's heir was crowned without Becket, who excommunicated the bishops who took part. Becket's tomb became one of the main destinations for pilgrims for the next 400 years, including those in Chaucer's Canterbury Tales where he was the 'blisful martir'. With Laura Ashe Associate Professor of English at Worcester College, University of Oxford Michael Staunton Associate Professor in History at University College Dublin And Danica Summerlin Lecturer in Medieval History at the University of Sheffield Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Herman Melville's (1819-1891) epic novel, published in London in 1851, the story of Captain Ahab's pursuit of a great white sperm whale that had bitten off his leg. He risks his own life and that of his crew on the Pequod, single-mindedly seeking his revenge, his story narrated by Ishmael who was taking part in a whaling expedition for the first time. This is one of the c1000 ideas which listeners sent in this autumn for our fourth Listener Week, following Kafka's The Trial in 2014, Captain Cook in 2015 and Garibaldi and the Risorgimento in 2016. With Bridget Bennett Professor of American Literature and Culture at the University of Leeds Katie McGettigan Lecturer in American Literature at Royal Holloway, University of London And Graham Thompson Associate Professor of American Studies at the University of Nottingham Producer: Simon Tillotson.

In a programme first broadcast in 2017, Melvyn Bragg and guests discuss Gauss (1777-1855), widely viewed as one of the greatest mathematicians of all time. He was a child prodigy, correcting his father's accounts before he was 3, dumbfounding his teachers with the speed of his mental arithmetic, and gaining a wealthy patron who supported his education. He wrote on number theory when he was 21, with his Disquisitiones Arithmeticae, which has influenced developments since. Among his achievements, he was the first to work out how to make a 17-sided polygon, he predicted the orbit of the minor planet Ceres, rediscovering it, he found a way of sending signals along a wire, using electromagnetism, the first electromagnetic telegraph, and he advanced the understanding of parallel lines on curved surfaces. With Marcus du Sautoy Professor of Mathematics and Simonyi Professor for the Public Understanding of Science at the University of Oxford Colva Roney-Dougal Reader in Pure Mathematics at the University of St Andrews And Nick Evans Professor of Theoretical Physics at the University of Southampton Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the myths and history of the ancient Greek city of Thebes and its depiction in Athenian drama. In myths it was said to be home to Heracles, Dionysus, Oedipus and Cadmus among others and, in history, was infamous for supporting Xerxes in the Persian War. Its prominence led to a struggle with the rising force of Macedon in which the Thebans were defeated at Chaironea in 338 BC, one of the most important battles in ancient history. The position of Thebes in Greek culture was enormously powerful. The strength of its myths and its proximity to Athens made it a source of stories for the Athenian theatre, and is the setting for more of the surviving plays than any other location. The image, above, is of Oedipus answering questions of the sphinx in Thebes (cup 5th century BC). With Edith Hall Professor of Classics at King's College London Samuel Gartland Lecturer in Ancient History at Corpus Christi College, University of Oxford and Paul Cartledge Emeritus Professor of Greek Culture and AG Leventis Senior Research Fellow at Clare College, University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the life and impact of Germaine de Staël (1766-1817) who Byron praised as Europe's greatest living writer, and was at the heart of intellectual and literary life in the France of revolution and of Napoleon. As well as attracting and inspiring others in her salon, she wrote novels, plays. literary criticism, political essays, and poems and developed the ideas behind Romanticism. She achieved this while regularly exiled from the Paris in which she was born, having fallen out with Napoleon who she opposed, becoming a towering figure in the history of European ideas. With Catriona Seth, Marshal Foch Professor of French Literature at the University of Oxford Alison Finch, Professor Emerita of French Literature at the University of Cambridge and Katherine Astbury, Associate Professor and Reader in French Studies at the University of Warwick. Producer: Simon Tillotson.

Melvyn Bragg and guests discuss The Picts and, to mark our twentieth season, that discussion takes place in front of a student audience at the University of Glasgow, many of them studying this topic. According to Bede writing c731AD, the Picts, with the English, Britons, Scots and Latins, formed one of the five nations of Britain, 'an island in the ocean formerly called Albion'. The Picts is now a label given to the people who lived in Scotland north of the Forth-Clyde line from about 300 AD to 900 AD, from the time of the Romans to the time of the Vikings. They left intricately carved stones, such as the one above with a bull motif, from Burghead, Moray, Scotland, but there are relatively few other traces. Who were they, and what happened to them? And what has been learned in the last twenty years, through archaeology? With Katherine Forsyth Reader in the Department of Celtic and Gaelic at the University of Glasgow Alex Woolf Senior Lecturer in Dark Age Studies at the University of St Andrews and Gordon Noble Reader in Archaeology at the University of Aberdeen Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the context and impact of Pablo Picasso's iconic work, created soon after the bombing on 26th April 1937 that obliterated much of the Basque town of Guernica, and its people. The attack was carried out by warplanes of the German Condor Legion, joined by the Italian air force, on behalf of Franco's Nationalists. At first the Nationalists denied responsibility, blaming their opponents for creating the destruction themselves for propaganda purposes, but the accounts of journalists such as George Steer, and the prominence of Picasso's work, kept the events of that day under close scrutiny. Picasso's painting has gone on to become a symbol warning against the devastation of war. With Mary Vincent Professor of Modern European History at the University of Sheffield Gijs van Hensbergen Historian of Spanish Art and Fellow of the LSE Cañada Blanch Centre for Contemporary Spanish Studies and Dacia Viejo Rose Lecturer in Heritage in the Department of Archaeology at the University of Cambridge Fellow of Selwyn College Producer: Simon Tillotson.

In a programme first broadcast in 2017, Melvyn Bragg and guests discuss the development of theories about dinosaur feathers, following discoveries of fossils which show evidence of feathers. All dinosaurs were originally thought to be related to lizards - the word 'dinosaur' was created from the Greek for 'terrible lizard' - but that now appears false. In the last century, discoveries of fossils with feathers established that at least some dinosaurs were feathered and that some of those survived the great extinctions and evolved into the birds we see today. There are still many outstanding areas for study, such as what sorts of feathers they were, where on the body they were found, what their purpose was and which dinosaurs had them. With Mike Benton Professor of Vertebrate Palaeontology at the University of Bristol Steve Brusatte Reader and Chancellor's Fellow in Vertebrate Palaeontology at the University of Edinburgh and Maria McNamara Senior Lecturer in Geology at University College, Cork Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the conference convened by the victorious powers of the Napoleonic Wars and the earlier French Revolutionary Wars, which had devastated so much of Europe over the last 25 years. The powers aimed to create a long lasting peace, partly by redrawing the map to restore old boundaries and partly by balancing the powers so that none would risk war again. It has since been seen as a very conservative outcome, reasserting the old monarchical and imperial orders over the growth of liberalism and national independence movements, and yet also largely successful in its goal of preventing war in Europe on such a scale for another 100 years. Delegates to Vienna were entertained at night with lavish balls, and the image above is from a French cartoon showing Russia, Prussia, and Austria dancing to the bidding of Castlereagh, the British delegate. With Kathleen Burk Professor Emerita of Modern and Contemporary History at University College London Tim Blanning Emeritus Professor of Modern European History at the University of Cambridge and John Bew Professor in History and Foreign Policy at the War Studies Department at King's College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Aphra Behn (1640-1689), who made her name and her living as a playwright, poet and writer of fiction under the Restoration. Virginia Woolf wrote of her: ' All women together, ought to let flowers fall upon the grave of Aphra Behn... for it was she who earned them the right to speak their minds'. Behn may well have spent some of her early life in Surinam, the setting for her novel Oroonoko, and there are records of her working in the Netherlands as a spy for Charles II. She was loyal to the Stuart kings, and refused to write a poem on the coronation of William of Orange. She was regarded as an important writer in her lifetime and inspired others to write, but fell out of favour for two centuries after her death when her work was seen as too bawdy, the product of a disreputable age. The image above is from the Yale Center for British Art and is titled 'Aphra Behn, by Sir Peter Lely, 1618-1680' With Janet Todd Former President of Lucy Cavendish College, Cambridge University Ros Ballaster Professor of 18th Century Literature at Mansfield College, University of Oxford and Claire Bowditch Post-doctoral Research Associate in English and Drama at Loughborough University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the life, reputation and impact of Constantine I, known as Constantine the Great (c280s -337AD). Born in modern day Serbia and proclaimed Emperor by his army in York in 306AD, Constantine became the first Roman Emperor to profess Christianity. He legalised Christianity and its followers achieved privileges that became lost to traditional religions, leading to the steady Christianisation of the Empire. He built a new palace in Byzantium, renaming it Constantinople, as part of the decentralisation of the Empire, an Eastern shift that saw Roman power endure another thousand years there, long after the collapse of the empire in the West. With Christopher Kelly Professor of Classics and Ancient History at the University of Cambridge and President of Corpus Christi College Lucy Grig Senior Lecturer in Roman History at the University of Edinburgh and Greg Woolf Director of the Institute of Classical Studies, University of London Producer: Simon Tillotson.

In a programme first broadcast in 2017, Melvyn Bragg and guests discuss Emily Bronte (1818-1848) and her only novel, published in 1847 under the name 'Ellis Bell' just a year before her death. It is the story of Heathcliff, a foundling from Liverpool brought up in the Earnshaw family at the remote Wuthering Heights, high on the moors, who becomes close to the young Cathy Earnshaw but hears her say she can never marry him. He disappears and she marries his rival, Edgar Linton, of Thrushcross Grange even though she feels inextricably linked with Heathcliff, exclaiming to her maid 'I am Heathcliff!' On his return, Heathcliff steadily works through his revenge on all who he believes wronged him, and their relations. When Cathy dies, Heathcliff longs to be united with her in the grave. The raw passions and cruelty of the story unsettled Emily's sister Charlotte Bronte, whose novel Jane Eyre had been published shortly before, and who took pains to explain its roughness, jealousy and violence when introducing it to early readers. Over time, with its energy, imagination and scope, Wuthering Heights became celebrated as one of the great novels in English. The image above is of Laurence Olivier as Heathcliff and Merle Oberon as Cathy on the set of the Samuel Goldwyn Company movie 'Wuthering Heights', circa 1939. With Karen O'Brien Professor of English Literature at the University of Oxford John Bowen Professor of Nineteenth Century Literature at the University of York and Alexandra Lewis Lecturer in English Literature at the University of Aberdeen Producer: Simon Tillotson.

Melvyn Bragg and guests discuss how, in the Enlightenment, Immanuel Kant (1724-1804) sought to define the difference between right and wrong by applying reason, looking at the intention behind actions rather than at consequences. He was inspired to find moral laws by natural philosophers such as Newton and Leibniz, who had used reason rather than emotion to analyse the world around them and had identified laws of nature. Kant argued that when someone was doing the right thing, that person was doing what was the universal law for everyone, a formulation that has been influential on moral philosophy ever since and is known as the Categorical Imperative. Arguably even more influential was one of his reformulations, echoed in The Universal Declaration of Human Rights, in which he asserted that humanity has a value of an entirely different kind from that placed on commodities. Kant argued that simply existing as a human being was valuable in itself, so that every human owed moral responsibilities to other humans and was owed responsibilities in turn. With Alison Hills Professor of Philosophy at St John's College, Oxford David Oderberg Professor of Philosophy at the University of Reading and John Callanan Senior Lecturer in Philosophy at King's College, London Producer: Simon Tillotson.

Melvyn Bragg and his guests discuss the Central Asian polymath al-Biruni and his eleventh-century book the India.Born in around 973 in the central Asian region of Chorasmia, al-Biruni became an itinerant scholar of immense learning, a master of mathematics, medicine, astronomy and many languages. He corresponded with the age's greatest scientist, Avicenna, and made significant contributions to many fields of knowledge.In 1017 al-Biruni became a member of the court of the ruler Mahmud of Ghazna. Over the course of the next thirteen years he wrote the India, a comprehensive account of Hindu culture which was the first book about India by a Muslim scholar. It contains detailed information about Hindu religion, science and everyday life which have caused some to call it the first work of anthropology.With:James MontgomeryProfessor of Classical Arabic at the University of CambridgeHugh KennedyProfessor of Arabic in the School of Oriental and African Studies at the University of LondonAmira BennisonSenior Lecturer in Middle Eastern and Islamic Studies at the University of CambridgeProducer: Thomas Morris.

Melvyn Bragg and guests discuss why some birds migrate and others do not, how they select their destinations and how they navigate the great distances, often over oceans. For millennia, humans set their calendars to birds' annual arrivals, and speculated about what happened when they departed, perhaps moving deep under water, or turning into fish or shellfish, or hibernating while clinging to trees upside down. Ideas about migration developed in C19th when, in Germany, a stork was noticed with an African spear in its neck, indicating where it had been over the winter and how far it had flown. Today there are many ideas about how birds use their senses of sight and smell, and magnetic fields, to find their way, and about why and how birds choose their destinations and many questions. Why do some scatter and some flock together, how much is instinctive and how much is learned, and how far do the benefits the migrating birds gain outweigh the risks they face? With Barbara Helm Reader at the Institute of Biodiversity, Animal Health and Comparative Medicine at the University of Glasgow Tim Guilford Professor of Animal Behaviour and Tutorial Fellow of Zoology at Merton College, Oxford and Richard Holland Senior Lecturer in Animal Cognition at Bangor University Producer: Simon Tillotson.

Is it always better to be just than unjust? That is the central question of Plato's Republic, discussed here by Melvyn Bragg and guests. Writing in c380BC, Plato applied this question both to the individual and the city-state, considering earlier and current forms of government in Athens and potential forms, in which the ideal city might be ruled by philosophers. The Republic is arguably Plato's best known and greatest work, a dialogue between Socrates and his companions, featuring the allegory of the cave and ideas about immortality of the soul, the value of poetry to society, and democracy's vulnerability to a clever demagogue seeking tyranny. With Angie Hobbs Professor of the Public Understanding of Philosophy at the University of Sheffield MM McCabe Professor of Ancient Philosophy Emerita at King's College London and James Warren Fellow of Corpus Christi College and a Reader in Ancient Philosophy at the University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Alexander Pushkin's verse novel, the story of Eugene Onegin, widely regarded as his masterpiece. Pushkin (pictured above) began this in 1823 and worked on it over the next ten years, while moving around Russia, developing the central character of a figure all too typical of his age, the so-called superfluous man. Onegin is cynical, disillusioned and detached, his best friend Lensky is a romantic poet and Tatyana, whose love for Onegin is not returned until too late, is described as a poetic ideal of a Russian woman, and they are shown in the context of the Russian landscape and society that has shaped them. Onegin draws all three into tragic situations which, if he had been willing and able to act, he could have prevented, and so becomes the one responsible for the misery of himself and others as well as the death of his friend. With Andrew Kahn Professor of Russian Literature at the University of Oxford and Fellow of St Edmund Hall Emily Finer Lecturer in Russian and Comparative Literature at the University of St Andrews and Simon Dixon The Sir Bernard Pares Professor of Russian History at University College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss what, in C19th America's Gilded Age, was one of the most significant protest movements since the Civil War with repercussions well into C20th. Farmers in the South and Midwest felt ignored by the urban and industrial elites who were thriving as the farmers suffered droughts and low prices. The farmers were politically and physically isolated. As one man wrote on his abandoned farm, 'two hundred and fifty miles to the nearest post office, one hundred miles to wood, twenty miles to water, six inches to Hell'. They formed the Populist or People's Party to fight their cause, put up candidates for President, won several states and influenced policies. In the South, though, their appeal to black farmers stimulated their political rivals to suppress the black vote for decades and set black and poor white farmers against each other, tightening segregation. Aspects of the Populists ideas re-emerged effectively in Roosevelt's New Deal, even if they are mainly remembered now, if at all, thanks to allegorical references in The Wizard of Oz. The caricature above is of William Jennings Bryan, Populist-backed Presidential candidate. With Lawrence Goldman Professor of History at the Institute of Historical Research, University of London Mara Keire Lecturer in US History at the University of Oxford And Christopher Phelps Associate Professor of American Studies at the University of Nottingham Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the life and works of Christine de Pizan, who wrote at the French Court in the late Middle Ages and was celebrated by Simone de Beauvoir as the first woman to 'take up her pen in defence of her sex.' She wrote across a broad range, and was particularly noted for challenging the depiction of women by famous writers such as Jean de Meun, author of the Romance of the Rose. She has been characterised as an early feminist who argued that women could play a much more important role in society than the one they were allotted, reflected in arguably her most important work, The Book of the City of Ladies, a response to the seemingly endless denigration of women in popular texts of the time. The image above, of Christine de Pizan lecturing, is (c)The British Library Board. Harley 4431, f.259v. With Helen Swift Associate Professor of Medieval French at the University of Oxford and Fellow of St Hilda's College Miranda Griffin Lecturer in French and Fellow of St Catharine's College, Cambridge and Marilynn Desmond Distinguished Professor of English and Comparative Literature at Binghamton University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss enzymes, the proteins that control the speed of chemical reactions in living organisms. Without enzymes, these reactions would take place too slowly to keep organisms alive: with their actions as catalysts, changes which might otherwise take millions of years can happen hundreds of times a second. Some enzymes break down large molecules into smaller ones, like the ones in human intestines, while others use small molecules to build up larger, complex ones, such as those that make DNA. Enzymes also help keep cell growth under control, by regulating the time for cells to live and their time to die, and provide a way for cells to communicate with each other. With Nigel Richards Professor of Biological Chemistry at Cardiff University Sarah Barry Lecturer in Chemical Biology at King's College London And Jim Naismith Director of the Research Complex at Harwell Bishop Wardlaw Professor of Chemical Biology at the University of St Andrews Professor of Structural Biology at the University of Oxford Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the flourishing of the idea of Purgatory from C12th, when it was imagined as a place alongside Hell and Heaven in which the souls of sinners would be purged of those sins by fire. In the West, there were new systems put in place to pray for the souls of the dead, on a greater scale, with opportunities to buy pardons to shorten time in Purgatory. The idea was enriched with visions, some religious and some literary; Dante imagined Purgatory as a mountain in the southern hemisphere, others such as Marie de France told of The Legend of the Purgatory of Saint Patrick, in which the entrance was on Station Island in County Donegal. This idea of purification by fire had appalled the Eastern Orthodox Church and was one of the factors in the split from Rome in 1054, but flourished in the West up to the reformations of C16th when it was again particularly divisive. With Laura Ashe Associate Professor of English and fellow of Worcester College at the University of Oxford Matthew Treherne Professor of Italian Literature at the University of Leeds and Helen Foxhall Forbes Associate Professor of Early Medieval History at Durham University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the life and work of Louis Pasteur (1822-1895) and his extraordinary contribution to medicine and science. It is said few people have saved more lives than Pasteur. A chemist, he showed that otherwise identical molecules could exist as 'left' and 'right-handed' versions and that molecules produced by living things were always left-handed. He proposed a germ theory to replace the idea of spontaneous generation. He discovered that microorganisms cause fermentation and disease. He began the process named after him, pasteurisation, heating liquids to 50-60 C to kill microbes. He saved the beer and wine industries in France when they were struggling with microbial contamination. He saved the French silk industry when he found a way of protecting healthy silkworm eggs from disease. He developed vaccines against anthrax and rabies and helped establish immunology. Many of his ideas were developed further after his lifetime, but one of his legacies was a charitable body, the Pasteur Institute, to continue research into infectious disease. With Andrew Mendelsohn Reader in the School of History at Queen Mary, University of London Anne Hardy Honorary Professor at the Centre for History in Public Health at the London School of Hygiene and Tropical Medicine and Michael Worboys Emeritus Professor in the History of Science, Technology and Medicine at the University of Manchester Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the life and works of Emily Dickinson, arguably the most startling and original poet in America in the C19th. According to Thomas Wentworth Higginson, her correspondent and mentor, writing 15 years after her death, "Few events in American literary history have been more curious than the sudden rise of Emily Dickinson into a posthumous fame only more accentuated by the utterly recluse character of her life and by her aversion to even a literary publicity." That was in 1891 and, as more of Dickinson's poems were published, and more of her remaining letters, the more the interest in her and appreciation of her grew. With her distinctive voice, her abundance, and her exploration of her private world, she is now seen by many as one of the great lyric poets. With Fiona Green Senior Lecturer in English at the University of Cambridge and a Fellow of Jesus College Linda Freedman Lecturer in English and American Literature at University College London and Paraic Finnerty Reader in English and American Literature at the University of Portsmouth Producer: Simon Tillotson.

Melvyn Bragg and guests discuss The Battle of Lincoln on 20th May 1217, when two armies fought to keep, or to win, the English crown. This was a struggle between the Angevin and Capetian dynasties, one that followed Capetian successes over the Angevins in France. The forces of the new boy-king, Henry III, attacked those of Louis of France, the claimant backed by rebel Barons. Henry's regent, William Marshal, was almost seventy when he led the charge on Lincoln that day, and his victory confirmed his reputation as England's greatest knight. Louis sent to France for reinforcements but in August these, too, were defeated at sea, at the Battle of Sandwich. As part of the peace deal, Henry reissued Magna Carta, which King John had granted in 1215 but soon withdrawn, and Louis went home, leaving England's Anglo-French rulers more Anglo and less French than he had planned. The image above is by Matthew Paris (c1200-1259) from his Chronica Majora (MS 16, f. 55v) and appears with the kind permission of the Master and Fellows of Corpus Christi College, Cambridge With Louise Wilkinson Professor of Medieval History at Canterbury Christ Church University Stephen Church Professor of Medieval History at the University of East Anglia and Thomas Asbridge Reader in Medieval History at Queen Mary, University of London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the text and context of The Book of the Dead, also known as the Book of Coming Forth by Day, the ancient Egyptian collections of spells which were intended to help the recently deceased navigate the underworld. They flourished under the New Kingdom from C16th BC until the end of the Ptolemaic era in C1st BC, and drew on much earlier traditions from the walls of pyramids and on coffin cases. Almost 200 spells survive, though no one collection contains all of them, and one of the best known surrounds the weighing of the heart, the gods' final judgement of the deceased's life. With John Taylor Curator at the Department of Ancient Egypt and Sudan at the British Museum Kate Spence Senior Lecturer in Egyptian Archaeology at Cambridge University and Fellow of Emmanuel College and Richard Parkinson Professor of Egyptology at the University of Oxford and Fellow of the Queen's College Producer: Simon Tillotson.

The 13th-century English philosopher Roger Bacon is perhaps best known for his major work the Opus Maius. Commissioned by Pope Clement IV, this extensive text covered a multitude of topics from mathematics and optics to religion and moral philosophy. He is also regarded by some as an early pioneer of the modern scientific method. Bacon's erudition was so highly regarded that he came to be known as 'Doctor Mirabilis' or 'wonderful doctor'. However, he is a man shrouded in mystery. Little is known about much of his life and he became the subject of a number of strange legends, including one in which he allegedly constructed a mechanical brazen head that would predict the future. With: Jack Cunningham Academic Coordinator for Theology at Bishop Grosseteste University, Lincoln Amanda Power Associate Professor of Medieval History at the University of Oxford Elly Truitt Associate Professor of Medieval History at Bryn Mawr College Producer: Victoria Brignell.

Melvyn Bragg discusses the life and times of Rosa Luxemburg (1871-1919), 'Red Rosa', who was born in Poland under the Russian Empire and became one of the leading revolutionaries in an age of revolution. She was jailed for agitation and for her campaign against the Great War which, she argued, pitted workers against each other for the sake of capitalism. With Karl Liebknecht and other radicals, she founded the Spartacus League in the hope of ending the war through revolution. She founded the German Communist Party with Liebknecht; with the violence that followed the German Revolution of 1918, her opponents condemned her as Bloody Rosa. She and Liebknecht were seen as ringleaders in the Spartacus Revolt of 1919 and, on 15th January 1919, the Freikorps militia arrested and murdered them. While Luxemburg has faced opposition for her actions and ideas from many quarters, she went on to become an iconic figure in East Germany under the Cold War and a focal point for opposition to the Soviet-backed leadership. With Jacqueline Rose Co-Director of the Birkbeck Institute for the Humanities, Birkbeck, University of London Mark Jones Irish Research Council fellow at the Centre for War Studies, University College Dublin and Nadine Rossol Senior lecturer in Modern European History at the University of Essex Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the life and ideas of Wolfgang Pauli (1900-1958), whose Exclusion Principle is one of the key ideas in quantum mechanics. A brilliant physicist, at 21 Pauli wrote a review of Einstein's theory of general relativity and that review is still a standard work of reference today. The Pauli Exclusion Principle proposes that no two electrons in an atom can be at the same time in the same state or configuration, and it helps explain a wide range of phenomena such as the electron shell structure of atoms. Pauli went on to postulate the existence of the neutrino, which was confirmed in his lifetime. Following further development of his exclusion principle, Pauli was awarded the Nobel Prize in Physics in 1945 for his 'decisive contribution through his discovery of a new law of Nature'. He also had a long correspondence with Jung, and a reputation for accidentally breaking experimental equipment which was dubbed The Pauli Effect. With Frank Close Fellow Emeritus at Exeter College, University of Oxford Michela Massimi Professor of Philosophy of Science at the University of Edinburgh and Graham Farmelo Bye-Fellow of Churchill College, University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Katsushika Hokusai (1760-1849), the Japanese artist whose views of Mt Fuji such as The Great Wave off Kanagawa (pictured) are some of the most iconic in world art. He worked as Japan was slowly moving towards greater contact with the outside world, trading with China and allowing two Dutch ships to dock each year. From these ships he picked up new synthetic colours and illustrations with Western compositions, which he incorporated in his traditional wood block prints. The quality of his images helped drive demand for prints among the highly literate Japanese public, particularly those required to travel to Edo under feudal obligations and who wanted to collect all his prints. As well as the quality of his work, Hokusai's success stems partly from his long life and career. He completed some of his most memorable works in his 70s and 80s and claimed he would not reach his best until he was 110. With Angus Lockyer Lecturer in Japanese History at SOAS University of London Rosina Buckland Senior Curator of Japanese Collections at the National Museum of Scotland And Ellis Tinios Honorary Lecturer in the School of History, University of Leeds Producer: Simon Tillotson.

Melvyn Bragg and guests discuss what is often called one of the most significant battles in history. In 480BC in the Saronic Gulf near Athens, between the mainland and the island of Salamis, a fleet of Greek allies decisively defeated a larger Persian-led fleet. This halted the further Persian conquest of Greece and, at Plataea and Mycale the next year, further Greek victories brought Persian withdrawal and the immediate threat of conquest to an end. To the Greeks, this enabled a flourishing of a culture that went on to influence the development of civilisation in Rome and, later, Europe and beyond. To the Persians, it was a reverse at the fringes of their vast empire but not a threat to their existence, as it was for the Greek states, and attention turned to quelling unrest elsewhere. With Lloyd Llewellyn-Jones Professor in Ancient History at Cardiff University Lindsay Allen Lecturer in Greek and Near Eastern History, King's College London and Paul Cartledge Emeritus Professor of Greek Culture and AG Leventis Senior Research Fellow at Clare College, University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the high temperatures that marked the end of the Paleocene and start of the Eocene periods, about 50m years ago. Over c1000 years, global temperatures rose more than 5 C on average and stayed that way for c100,000 years more, with the surface of seas in the Arctic being as warm as those in the subtropics. There were widespread extinctions, changes in ocean currents, and there was much less oxygen in the sea depths. The rise has been attributed to an increase of carbon dioxide and methane in the atmosphere, though it is not yet known conclusively what the source of those gases was. One theory is that a rise in carbon dioxide, perhaps from volcanoes, warmed up the globe enough for warm water to reach the bottom of the oceans and so release methane from frozen crystals in the sea bed. The higher the temperature rose and the longer the water was warm, the more methane was released. Scientists have been studying a range of sources from this long period, from ice samples to fossils, to try to understand more about possible causes. With Dame Jane Francis Professor of Palaeoclimatology at the British Antarctic Survey Mark Maslin Professor of Palaeoclimatology at University College London And Tracy Aze Lecturer in Marine Micropaleontology at the University of Leeds Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Elizabeth Gaskell's novel North and South, published in 1855 after serialisation in Dickens' Household Words magazine. It is the story of Margaret Hale, who was raised in the South in the New Forest and London's Harley Street, and then moves North to a smokey mill town, Milton, in Darkshire. As well as Margaret's emotional life and her growing sense of independence, the novel explores the new ways of living thrown up by industrialisation, and the relationships between 'masters and men'. Many of Margaret Hale's experiences echo Gaskell's own life, as she was born in Chelsea and later moved to Manchester, and the novel has become valued for its insights into social conflicts and the changing world in which Gaskell lived. With Sally Shuttleworth Professor of English Literature at the University of Oxford Dinah Birch Pro-vice Chancellor for Research and Professor of English Literature at the University of Liverpool And Jenny Uglow Biographer of Elizabeth Gaskell Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the Kuiper Belt, a vast region of icy objects at the fringes of our Solar System, beyond Neptune, in which we find the dwarf planet Pluto and countless objects left over from the origins of the solar system, some of which we observe as comets. It extends from where Neptune is, which is 30 times further out than the Earth is from the Sun, to about 500 times the Earth-Sun distance. It covers an immense region of space and it is the part of the Solar System that we know the least about, because it is so remote from us and has been barely detectable by Earth-based telescopes until recent decades. Its existence was predicted before it was known, and study of the Kuiper Belt, and how objects move within it, has led to a theory that there may be a 9th planet far beyond Neptune. With Carolin Crawford Public Astronomer at the Institute of Astronomy and Fellow of Emmanuel College, University of Cambridge Monica Grady Professor of Planetary and Space Sciences at the Open University And Stephen Lowry Reader in Planetary and Space Sciences, University of Kent Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Seneca the Younger, who was one of the first great writers to live his entire life in the world of the new Roman empire, after the fall of the Republic. He was a Stoic philosopher, he wrote blood-soaked tragedies, he was an orator, and he navigated his way through the reigns of Caligula, Claudius and Nero, sometimes exercising power at the highest level and at others spending years in exile. Agrippina the Younger was the one who called for him to tutor Nero, and it is thought Seneca helped curb some of Nero's excesses. He was later revered within the Christian church, partly for what he did and partly for what he was said to have done in forged letters to St Paul. His tragedies, with their ghosts and high body count, influenced Shakespeare's Titus Andronicus and Hamlet, and Kyd's Spanish Tragedy. The image above is the so-called bust of Seneca, a detail from Four Philosophers by Peter Paul Rubens. With Mary Beard Professor of Classics at the University of Cambridge Catharine Edwards Professor of Classics and Ancient History at Birkbeck, University of London and Alessandro Schiesaro Professor of Classics at the University of Manchester Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the flourishing of maths in the early Islamic world, as thinkers from across the region developed ideas in places such as Baghdad's House of Wisdom. Among them were the Persians Omar Khayyam, who worked on equations, and Al-Khwarizmi, latinised as Algoritmi and pictured above, who is credited as one of the fathers of algebra, and the Jewish scholar Al-Samawal, who converted to Islam and worked on mathematical induction. As well as the new ideas, there were many advances drawing on Indian, Babylonian and Greek work and, thanks to the recording or reworking by mathematicians in the Islamic world, that broad range of earlier maths was passed on to western Europe for further study. With Colva Roney-Dougal Reader in Pure Mathematics at the University of St Andrews Peter Pormann Professor of Classics & Graeco-Arabic Studies at the University of Manchester And Jim Al-Khalili Professor of Physics at the University of Surrey Producer: Simon Tillotson.

In a programme first broadcast in 2017, Melvyn Bragg and guests discuss the Northamptonshire poet John Clare who, according to one of Melvyn's guests Jonathan Bate, was 'the greatest labouring-class poet that England has ever produced'. Clare worked in a tavern, as a gardener and as a farm labourer in the early 19th century and achieved his first literary success with Poems Descriptive of Rural Life and Scenery. He was praised for his descriptions of rural England and his childhood there, and his reaction to the changes he saw in the Agricultural Revolution with its enclosures, displacement and altered, disrupted landscape. Despite poor mental health and, from middle age onwards, many years in asylums, John Clare continued to write and he is now seen as one of the great poets of his age. With Sir Jonathan Bate Provost of Worcester College, University of Oxford Mina Gorji Senior Lecturer in the English Faculty and fellow of Pembroke College, Cambridge and Simon Kövesi Professor of English Literature at Oxford Brookes University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the political philosophy of Hannah Arendt. She developed many of her ideas in response to the rise of totalitarianism in the C20th, partly informed by her own experience as a Jew in Nazi Germany before her escape to France and then America. She wanted to understand how politics had taken such a disastrous turn and, drawing on ideas of Greek philosophers as well as her peers, what might be done to create a better political life. Often unsettling, she wrote of 'the banality of evil' when covering the trial of Eichmann, one of the organisers of the Holocaust. With Lyndsey Stonebridge Professor of Modern Literature and History at the University of East Anglia Frisbee Sheffield Lecturer in Philosophy at Girton College, University of Cambridge and Robert Eaglestone Professor of Contemporary Literature and Thought at Royal Holloway, University London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the relationship between parasites and hosts, where one species lives on or in another to the benefit of the parasite but at a cost to the host, potentially leading to disease or death of the host. Typical examples are mistletoe and trees, hookworms and vertebrates, cuckoos and other birds. In many cases the parasite species do so well in or on a particular host that they reproduce much faster and can adapt to changes more efficiently, and it is thought that almost half of all animal species have a parasitic stage in their lifetime. What techniques do hosts have to counter the parasites, and what impact do parasites have on the evolution of their hosts? With Steve Jones Emeritus Professor of Genetics at University College, London Wendy Gibson Professor of Protozoology at the University of Bristol and Kayla King Associate Professor in the Department of Zoology at the University of Oxford Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the history of Mary, Queen of Scots, who had potential to be one of the most powerful rulers in Europe, yet she was also one of the most vulnerable. In France, when she was the teenage bride to their future king, she was seen as rightful heir to the thrones of England and Ireland, as well as Queen of Scotland and one day of France, which would have been an extraordinary union. She was widowed too young, though and, a Catholic returning to Protestant Scotland, she struggled to overcome rivalries in her own country. She fled to Protestant England, where she was implicated in plots to overthrow Elizabeth, and it was Elizabeth herself who signed Mary's death warrant. With David Forsyth Principal Curator, Scottish Medieval-Early Modern Collections at National Museums Scotland Anna Groundwater Teaching Fellow in Historical Skills and Methods at the University of Edinburgh And John Guy Fellow of Clare College, University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Nietzsche's On The Genealogy of Morality - A Polemic, which he published in 1887 towards the end of his working life and in which he considered the price humans have paid, and were still paying, to become civilised. In three essays, he argued that having a guilty conscience was the price of living in society with other humans. He suggested that Christian morality, with its consideration for others, grew as an act of revenge by the weak against their masters, 'the blond beasts of prey', as he calls them, and the price for that slaves' revolt was endless self-loathing. These and other ideas were picked up by later thinkers, perhaps most significantly by Sigmund Freud who further explored the tensions between civilisation and the individual. With Stephen Mulhall Professor of Philosophy and a Fellow and Tutor at New College, University of Oxford Fiona Hughes Senior Lecturer in Philosophy at the University of Essex And Keith Ansell-Pearson Professor of Philosophy at the University of Warwick Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the German astronomer Johannes Kepler (1571 - 1630). Although he is overshadowed today by Isaac Newton and Galileo, he is considered by many to be one of the greatest scientists in history. The three laws of planetary motion Kepler developed transformed people's understanding of the Solar System and laid the foundations for the revolutionary ideas Isaac Newton produced later. Kepler is also thought to have written one of the first works of science fiction. However, he faced a number of challenges. He had to defend his mother from charges of witchcraft, he had few financial resources and his career suffered as a result of his Lutheran faith. With David Wootton Professor of History at the University of York Ulinka Rublack Professor of Early Modern European History at the University of Cambridge and Fellow of St John's College Adam Mosley Associate Professor in the Department of History at Swansea University Producer: Victoria Brignell.

Melvyn Bragg and guests discuss Four Quartets, TS Eliot's last great work which he composed, against a background of imminent and actual world war, as meditations on the relationship between time and humanity. With David Moody Emeritus Professor of English and American Literature at the University of York Fran Brearton Professor of Modern Poetry at Queen's University, Belfast And Mark Ford Professor of English and American Literature at University College London Producer: Simon Tillotson Jeremy Irons will be reading TS Eliot's greatest poems, from Prufrock to The Waste Land to Four Quartets, across New Year's Day here on Radio 4.

In a programme first broadcast in December 2016, Melvyn Bragg and guests discuss the craze for gin in Britain in the mid-18th century and the attempts to control it. With the arrival of William of Orange, it became an act of loyalty to drink Protestant, Dutch gin rather than Catholic brandy, and changes in tariffs made everyday beer less affordable. Within a short time, production increased and large sections of the population that had rarely or never drunk spirits before were consuming two pints of gin a week. As Hogarth indicated in his print 'Beer Street and Gin Lane' (1751) in support of the Gin Act, the damage was severe, and addiction to gin was blamed for much of the crime in cities such as London. With Angela McShane Research Fellow in History at the Victoria and Albert Museum and University of Sheffield Judith Hawley Professor of 18th century literature at Royal Holloway, University of London Emma Major Senior Lecturer in English at the University of York Producer: Simon Tillotson

Melvyn Bragg and guests discuss Harriet Martineau who, from a non-conformist background in Norwich, became one of the best known writers in the C19th. She had a wide range of interests and used a new, sociological method to observe the world around her, from religion in Egypt to slavery in America and the rights of women everywhere. She popularised writing about economics for those outside the elite and, for her own popularity, was invited to the coronation of Queen Victoria, one of her readers. With Valerie Sanders Professor of English at the University of Hull Karen O'Brien Professor of English Literature at the University of Oxford And Ella Dzelzainis Lecturer in 19th Century Literature at Newcastle University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Giuseppe Garibaldi and the Italian Risorgimento. According to the historian AJP Taylor, Garibaldi was the only wholly admirable figure in modern history. Born in Nice in 1807, one of Garibaldi's aims in life was the unification of Italy and, in large part thanks to him, Italy was indeed united substantially in 1861 and entirely in 1870. With his distinctive red shirt and poncho, he was a hero of Romantic revolutionaries around the world. His fame was secured when, with a thousand soldiers, he invaded Sicily and toppled the monarchy in the Italian south. The Risorgimento was soon almost complete. This topic is the one chosen from over 750 different ideas suggested by listeners in October, for our yearly Listener Week. With Lucy Riall Professor of Comparative History of Europe at the European University Institute and Professor of History at Birkbeck, University of London Eugenio Biagini Professor of Modern and Contemporary History at the University of Cambridge and David Laven Associate Professor of History at the University of Nottingham Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the Baltic Crusades, the name given to a series of overlapping attempts to convert the pagans of North East Europe to Christianity at the point of the sword. From the 12th Century, Papal Bulls endorsed those who fought on the side of the Church, the best known now being the Teutonic Order which, thwarted in Jerusalem, founded a state on the edge of the Baltic, in Prussia. Some of the peoples in the region disappeared, either killed or assimilated, and the consequences for European history were profound. With Aleks Pluskowski Associate Professor of Archaeology at the University of Reading Nora Berend Fellow of St Catharine's College and Reader in European History at the Faculty of History at the University of Cambridge and Martin Palmer Director of the International Consultancy on Religion, Education, and Culture Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the ideas brought together under Justinian I, Byzantine emperor in the 6th century AD, which were rediscovered in Western Europe in the Middle Ages and became very influential in the development of laws in many European nations and elsewhere. With Caroline Humfress Professor of Medieval History at the University of St Andrews Simon Corcoran Lecturer in Ancient History at Newcastle University and Paul du Plessis Senior Lecturer in Civil law and European legal history at the School of Law, University of Edinburgh Producer: Simon Tillotson.

This image: Joseph Mallord William Turner, The Fighting Temeraire, 1839 (c) The National Gallery, London Melvyn Bragg and guests discuss "The Fighting Temeraire", one of Turner's greatest works and the one he called his 'darling'. It shows one of the most famous ships of the age, a hero of Trafalgar, being towed up the Thames to the breakers' yard, sail giving way to steam. Turner displayed this masterpiece to a public which, at the time, was deep in celebration of the Temeraire era, with work on Nelson's Column underway, and it was an immediate success, with Thackeray calling the painting 'a national ode'. With Susan Foister Curator of Early Netherlandish, German and British Painting at the National Gallery David Blayney Brown Manton Curator of British Art 1790-1850 at Tate Britain and James Davey Curator of Naval History at the National Maritime Museum Producer: Simon Tillotson.

"He who saw the Deep" are the first words of the standard version of The Epic of Gilgamesh, the subject of this discussion between Melvyn Bragg and his guests. Gilgamesh is often said to be the oldest surviving great work of literature, with origins in the third millennium BC, and it passed through thousands of years on cuneiform tablets. Unlike epics of Greece and Rome, the intact story of Gilgamesh became lost to later generations until tablets were discovered by Hormuzd Rassam in 1853 near Mosul and later translated. Since then, many more tablets have been found and much of the text has been reassembled to convey the story of Gilgamesh, king of Uruk the sheepfold, and Enkidu who the gods created to stop Gilgamesh oppressing his people. Together they fight Humbaba, monstrous guardian of the Cedar Forest, and kill the Bull of Heaven, for which the gods make Enkidu mortally ill. Gilgamesh goes on a long journey as he tries unsuccessfully to learn how to live forever, learning about the Great Deluge on the way, but his remarkable building works guarantee that his fame will last long after his death. With Andrew George Professor of Babylonian at SOAS, University of London Frances Reynolds Shillito Fellow in Assyriology at the Oriental Institute, University of Oxford and Fellow of St Benet's Hall and Martin Worthington Lecturer in Assyriology at the University of Cambridge Producer: Simon Tillotson.

The scientist John Dalton was born in North England in 1766. Although he came from a relatively poor Quaker family, he managed to become one of the most celebrated scientists of his age. Through his work, he helped to establish Manchester as a place where not only products were made but ideas were born. His reputation during his lifetime was so high that unusually a statue was erected to him before he died. Among his interests were meteorology, gasses and colour blindness. However, he is most remembered today for his pioneering thinking in the field of atomic theory. With: Jim Bennett Former Director of the Museum of the History of Science at the University of Oxford and Keeper Emeritus at the Science Museum Aileen Fyfe Reader in British History at the University of St Andrews James Sumner Lecturer in the History of Technology at the Centre for the History of Science, Technology and Medicine at the University of Manchester Producer: Victoria Brignell.

Melvyn Bragg and guests discuss the changes in the intellectual world of Western Europe in the 12th Century, and their origins. This was a time of Crusades, the formation of states, the start of Gothic architecture, a reconnection with Roman and Greek learning and their Arabic development and the start of the European universities, and has become known as The 12th Century Renaissance. The image above is part of Notre-Dame de la Belle-Verrière, Chartres Cathedral, from 1180. With Laura Ashe Associate Professor of English at Worcester College, University of Oxford Elisabeth van Houts Honorary Professor of European Medieval History at the University of Cambridge and Giles Gasper Reader in Medieval History at Durham University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss plasma, the fourth state of matter after solid, liquid and gas. As over ninety-nine percent of all observable matter in the Universe is plasma, planets like ours, with so little plasma and so much solid, liquid and gas, appear all the more remarkable. On the grand scale, plasma is what the Sun is made from and, when we look into the night sky, almost everything we can see with the naked eye is made of plasma. On the smallest scale, here on Earth, scientists make plasma to etch the microchips on which we rely for so much. Plasma is in the fluorescent light bulbs above our heads and, in laboratories around the world, it is the subject of tests to create, one day, an inexhaustible and clean source of energy from nuclear fusion. With Justin Wark Professor of Physics and Fellow of Trinity College at the University of Oxford Kate Lancaster Research Fellow for Innovation and Impact at the York Plasma Institute at the University of York and Bill Graham Professor of Physics at Queens University, Belfast Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the origins of the Hindu goddess Lakshmi, and of the traditions that have built around her for over 3,000 years. According to the creation story of the Puranas, she came to existence in the churning of the ocean of milk. Her prominent status grew alongside other goddesses in the mainly male world of the Vedas, as female deities came to be seen as the Shakti, the energy of the gods, without which they would be powerless. Lakshmi came to represent the qualities of blessing, prosperity, fertility, beauty and good fortune and, more recently, political order, and she has a significant role in Diwali, one of the most important of the Hindu festivals. With Jessica Frazier Lecturer in Religious Studies at the University of Kent Research Fellow at the Oxford Centre for Hindu Studies at the University of Oxford Jacqueline Suthren-Hirst Senior Lecturer in South Asian Studies at the University of Manchester and Chakravarthi Ram-Prasad Professor of Comparative Religion and Philosophy at Lancaster University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Animal Farm, which Eric Blair published under his pen name George Orwell in 1945. A biting critique of totalitarianism, particularly Stalinism, the essay sprung from Orwell's experiences fighting Fascists in Spain: he thought that all on the left were on the same side, until the dominant Communists violently suppressed the Anarchists and Trotskyists, and Orwell had to escape to France to avoid arrest. Setting his satire in an English farm, Orwell drew on the Russian Revolution of 1917, on Stalin's cult of personality and the purges. The leaders on Animal Farm are pigs, the secret police are attack dogs, the supporters who drown out debate with "four legs good, two legs bad" are sheep. At first, London publishers did not want to touch Orwell's work out of sympathy for the USSR, an ally of Britain in WW2, but the Cold War gave it a new audience and Animal Farm became a commercial as well as a critical success. With Steven Connor Grace 2 Professor of English at the University of Cambridge Mary Vincent Professor of Modern European History at the University of Sheffield and Robert Colls Professor of Cultural History at De Montfort University Producer: Simon Tillotson.

In a programme first broadcast in 2016, Melvyn Bragg and guests discuss Zeno of Elea, a pre-Socratic philosopher from c490-430 BC whose paradoxes were described by Bertrand Russell as "immeasurably subtle and profound." The best known argue against motion, such as that of an arrow in flight which is at a series of different points but moving at none of them, or that of Achilles who, despite being the faster runner, will never catch up with a tortoise with a head start. Aristotle and Aquinas engaged with these, as did Russell, yet it is still debatable whether Zeno's Paradoxes have been resolved. With Marcus du Sautoy Professor of Mathematics and Simonyi Professor for the Public Understanding of Science at the University of Oxford Barbara Sattler Lecturer in Philosophy at the University of St Andrews and James Warren Reader in Ancient Philosophy at the University of Cambridge Producer: Simon Tillotson

Melvyn Bragg and guests discuss the development of photography in the 1830s, when techniques for 'drawing with light' evolved to the stage where, in 1839, both Louis Daguerre and William Henry Fox Talbot made claims for its invention. These followed the development of the camera obscura, and experiments by such as Thomas Wedgwood and Nicéphore Niépce, and led to rapid changes in the 1840s as more people captured images with the daguerreotype and calotype. These new techniques changed the aesthetics of the age and, before long, inspired claims that painting was now dead. With Simon Schaffer Professor of the History of Science at the University of Cambridge Elizabeth Edwards Emeritus Professor of Photographic History at De Montfort University And Alison Morrison-Low, Research Associate at National Museums Scotland Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the history of the idea of Sovereignty, the authority of a state to govern itself and the relationship between the sovereign and the people. These ideas of external and internal sovereignty were imagined in various ways in ancient Greece and Rome, and given a name in 16th Century France by the philosopher and jurist Jean Bodin in his Six Books of the Commonwealth, where he said (in an early English translation) 'Maiestie or Soveraigntie is the most high, absolute, and perpetuall power over the citisens and subiects in a Commonweale: which the Latins cal Maiestatem, the Greeks akra exousia, kurion arche, and kurion politeuma; the Italians Segnoria, and the Hebrewes tomech shévet, that is to say, The greatest power to command.' Shakespeare also explored the concept through Richard II and the king's two bodies, Hobbes developed it in the 17th Century, and the idea of popular sovereignty was tested in the Revolutionary era in America and France. With Melissa Lane Class of 1943 Professor of Politics at Princeton University Richard Bourke Professor in the History of Political Thought at Queen Mary University of London and Tim Stanton Senior Lecturer in the Department of Politics at the University of York Producer: Simon Tillotson.

Melvyn Bragg and guests discuss William Blake's collection of illustrated poems "Songs of Innocence and of Experience." He published Songs of Innocence first in 1789 with five hand-coloured copies and, five years later, with additional Songs of Experience poems and the explanatory phrase "Shewing the Two Contrary States of the Human Soul." Blake drew on the street ballads and improving children's rhymes of the time, exploring the open and optimistic outlook of early childhood with the darker and more cynical outlook of adult life, in which symbols such as the Lamb belong to innocence and the Tyger to experience. With Sir Jonathan Bate Provost of Worcester College, University of Oxford Sarah Haggarty Lecturer at the Faculty of English and Fellow of Queens' College, University of Cambridge And Jon Mee Professor of Eighteenth-Century Studies at the University of York Producer: Simon Tillotson.

Melvyn Bragg and guests discuss The Bronze Age Collapse, the name given by many historians to what appears to have been a sudden, uncontrolled destruction of dominant civilizations around 1200 BC in the Aegean, Eastern Mediterranean and Anatolia. Among other areas, there were great changes in Minoan Crete, Egypt, the Hittite Empire, Mycenaean Greece and Syria. The reasons for the changes, and the extent of those changes, are open to debate and include droughts, rebellions, the breakdown of trade as copper became less desirable, earthquakes, invasions, volcanoes and the mysterious Sea Peoples. With John Bennet Director of the British School at Athens and Professor of Aegean Archaeology at the University of Sheffield Linda Hulin Fellow of Harris Manchester College and Research Officer at the Oxford Centre for Maritime Archaeology at the University of Oxford And Simon Stoddart Fellow of Magdalene College and Reader in Prehistory at the University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss penicillin, discovered by Alexander Fleming in 1928. It is said he noticed some blue-green penicillium mould on an uncovered petri dish at his hospital laboratory, and that this mould had inhibited bacterial growth around it. After further work, Fleming filtered a broth of the mould and called that penicillin, hoping it would be useful as a disinfectant. Howard Florey and Ernst Chain later shared a Nobel Prize in Medicine with Fleming, for their role in developing a way of mass-producing the life-saving drug. Evolutionary theory predicted the risk of resistance from the start and, almost from the beginning of this 'golden age' of antibacterials, scientists have been looking for ways to extend the lifespan of antibiotics. With Laura Piddock Professor of Microbiology at the University of Birmingham Christoph Tang Professor of Cellular Pathology and Professorial Fellow at Exeter College at the University of Oxford And Steve Jones Emeritus Professor of Genetics at University College, London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the English mystic Margery Kempe (1373-1438) whose extraordinary life is recorded in a book she dictated, The Book of Margery Kempe. She went on pilgrimage to Jerusalem, to Rome and Santiago de Compostela, purchasing indulgences on her way, met with the anchoress Julian of Norwich and is honoured by the Church of England each 9th November. She sometimes doubted the authenticity of her mystical conversations with God, as did the authorities who saw her devotional sobbing, wailing and convulsions as a sign of insanity and dissoluteness. Her Book was lost for centuries, before emerging in a private library in 1934. The image (above), of an unknown woman, comes from a pew at Margery Kempe's parish church, St Margaret's, Kings Lynn and dates from c1375. With Miri Rubin Professor of Medieval and Early Modern History at Queen Mary, University of London Katherine Lewis Senior Lecturer in History at the University of Huddersfield And Anthony Bale Professor of Medieval Studies at Birkbeck University of London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Abraham Lincoln's Gettysburg Address, ten sentences long, delivered at the dedication of the Soldiers' National Cemetery at Gettysburg after the Union forces had won an important battle with the Confederates. Opening with " Four score and seven years ago," it became one of the most influential statements of national purpose, asserting that America was "conceived in liberty, and dedicated to the proposition that all men are created equal" and "that this nation, under God, shall have a new birth of freedom-and that government of the people, by the people, for the people, shall not perish from the earth." Among those inspired were Martin Luther King Jr whose "I have a dream" speech, delivered at the Lincoln Memorial 100 years later, echoed Lincoln's opening words. With Catherine Clinton Denman Chair of American History at the University of Texas and International Professor at Queen's University, Belfast Susan-Mary Grant Professor of American History at Newcastle University And Tim Lockley Professor of American History at the University of Warwick Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the Muses and their role in Greek mythology, when they were goddesses of poetry, song, music and dance: what the Greeks called mousike, 'the art of the Muses' from which we derive our word 'music.' While the number of Muses, their origin and their roles varied in different accounts and at different times, they were consistently linked with the nature of artistic inspiration. This raised a question for philosophers then and since: was a creative person an empty vessel into which the Muses poured their gifts, at their will, or could that person do something to make inspiration flow? With Paul Cartledge Emeritus Professor of Greek Culture and AG Leventis Senior Research Fellow at Clare College, University of Cambridge Angie Hobbs Professor of the Public Understanding of Philosophy, University of Sheffield And Penelope Murray Founder member and retired Senior Lecturer, Department of Classics, University of Warwick Producer: Simon Tillotson Image: 'Apollo and the Muses (Parnassus)', 1631-1632. Oil on canvas. Nicolas Poussin (1594-1665).

Melvyn Bragg and guests discuss Titus Oates (1649-1705) who, with Israel Tonge, spread rumours of a Catholic plot to assassinate Charles II. From 1678, they went to great lengths to support their scheme, forging evidence and identifying the supposed conspirators. Fearing a second Gunpowder Plot, Oates' supposed revelations caused uproar in London and across the British Isles, with many Catholics, particularly Jesuit priests, wrongly implicated by Oates and then executed. Anyone who doubted him had to keep quiet, to avoid being suspected a sympathiser and thrown in prison. Oates was eventually exposed, put on trial under James II and sentenced by Judge Jeffreys to public whipping through the streets of London, but the question remained: why was this rogue, who had faced perjury charges before, ever believed? With Clare Jackson Senior Tutor and Director of Studies in History at Trinity Hall, University of Cambridge Mark Knights Professor of History at the University of Warwick And Peter Hinds Associate Professor of English at Plymouth University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Tess of the d'Urbervilles by Thomas Hardy, originally serialised in The Graphic in 1891 and, with some significant changes, published as a complete novel in 1892. The book was controversial even before serialisation, rejected by one publisher as too overtly sexual, to which a second added it did not publish 'stories where the plot involves frequent and detailed reference to immoral situations.' Hardy's description of Tess as 'A Pure Woman' in 1892 incensed some Victorian readers. He resented having to censor some of his scenes in the early versions, including references to Tess's baby following her rape by Alec d'Urberville, and even to a scene where Angel Clare lifted four milkmaids over a flooded lane (substituting transportation by wheelbarrow). The image above, from the 1891 edition, is captioned 'It Was Not Till About Three O'clock That Tess Raised Her Eyes And Gave A Momentary Glance Round. She Felt But Little Surprise At Seeing That Alec D'urberville Had Come Back, And Was Standing Under The Hedge By The Gate'. With Dinah Birch Professor of English Literature and Pro-Vice-Chancellor for Research and Impact at the University of Liverpool Francis O'Gorman Professor of Victorian Literature at the University of Leeds And Jane Thomas Reader in Victorian and early Twentieth Century literature at the University of Hull Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Euclid's Elements, a mathematical text book attributed to Euclid and in use from its appearance in Alexandria, Egypt around 300 BC until modern times, dealing with geometry and number theory. It has been described as the most influential text book ever written. Einstein had a copy as a child, which he treasured, later saying "If Euclid failed to kindle your youthful enthusiasm, then you were not born to be a scientific thinker." With Marcus du Sautoy Professor of Mathematics and Simonyi Professor for the Public Understanding of Science at the University of Oxford Serafina Cuomo Reader in Roman History at Birkbeck University of London And June Barrow-Green Professor of the History of Mathematics at the Open University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the impact of the eruption of Mt Tambora, in 1815, on the Indonesian island of Sambawa. This was the largest volcanic eruption in recorded history and it had the highest death toll, devastating people living in the immediate area. Tambora has been linked with drastic weather changes in North America and Europe the following year, with frosts in June and heavy rains throughout the summer in many areas. This led to food shortages, which may have prompted westward migration in America and, in a Europe barely recovered from the Napoleonic Wars, led to widespread famine. With Clive Oppenheimer Professor of Volcanology at the University of Cambridge Jane Stabler Professor in Romantic Literature at the University of St Andrews And Lawrence Goldman Director of the Institute of Historical Research at the University of London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the neutron, one of the particles found in an atom's nucleus. Building on the work of Ernest Rutherford, the British physicist James Chadwick won the Nobel Prize for Physics for his discovery of the neutron in 1932. Neutrons play a fundamental role in the universe and their discovery was at the heart of developments in nuclear physics in the first half of the 20th century. With Val Gibson Professor of High Energy Physics at the University of Cambridge and fellow of Trinity College Andrew Harrison Chief Executive Officer of Diamond Light Source and Professor in Chemistry at the University of Edinburgh And Frank Close Professor Emeritus of Physics at the University of Oxford.

Melvyn Bragg and guests discuss the rise of the Sikh Empire at the end of the 18th Century under Ranjit Singh, pictured above, who unified most of the Sikh kingdoms following the decline of the Mughal Empire. He became Maharaja of the Punjab at Lahore in 1801, capturing Amritsar the following year. His empire flourished until 1839, after which a decade of unrest ended with the British annexation. At its peak, the Empire covered the Punjab and stretched from the Khyber Pass in the west to the edge of Tibet in the east, up to Kashmir and down to Mithankot on the Indus River. Ranjit Singh is still remembered as "The Lion of the Punjab." With Gurharpal Singh Professor in Inter-Religious Relations and Development at SOAS, University of London Chandrika Kaul Lecturer in Modern History at the University of St Andrews And Susan Stronge Senior Curator in the Asian Department of the Victoria and Albert Museum Producer: Simon Tillotson.

Agrippina the Younger was one of the most notorious and influential of the Roman empresses in the 1st century AD. She was the sister of the Emperor Caligula, a wife of the Emperor Claudius and mother of the Emperor Nero. Through careful political manoeuvres, she acquired a dominant position for herself in Rome. In 39 AD she was exiled for allegedly participating in a plot against Caligula and later it was widely thought that she killed Claudius with poison. When Nero came to the throne, he was only 16 so Agrippina took on the role of regent until he began to exert his authority. After relations between Agrippina and Nero soured, he had her murdered. With: Catharine Edwards Professor of Classics and Ancient History at Birkbeck, University of London Alice König Lecturer in Latin and Classical Studies at the University of St Andrews Matthew Nicholls Associate Professor of Classics at the University of Reading Producer: Victoria Brignell.

Melvyn Bragg and guests discuss Elizabeth Barrett Browning's epic "Aurora Leigh" which was published in 1856. It is the story of an orphan, Aurora, born in Italy to an English father and Tuscan mother, who is brought up by an aunt in rural Shropshire. She has a successful career as a poet in London and, when living in Florence, is reunited with her cousin, Romney Leigh, whose proposal she turned down a decade before. The poem was celebrated by other poets and was Elizabeth Barrett Browning's most commercially successful. Over 11,000 lines, she addressed many Victorian social issues, including reform, illegitimacy, the pressure to marry and what women must overcome to be independent, successful writers, in a world dominated by men. With Margaret Reynolds Professor of English at Queen Mary, University of London Daniel Karlin Winterstoke Professor of English Literature at the University of Bristol And Karen O'Brien Professor of English Literature at King's College London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the early years of Bedlam, the name commonly used for the London hospital of St Mary of Bethlehem outside Bishopsgate, described in 1450 by the Lord Mayor of London as a place where may "be found many men that be fallen out of their wit. And full honestly they be kept in that place; and some be restored onto their wit and health again. And some be abiding therein for ever." As Bethlem, or Bedlam, it became a tourist attraction in the 17th Century at its new site in Moorfields and, for its relatively small size, made a significant impression on public attitudes to mental illness. The illustration, above, is from the eighth and final part of Hogarth's 'A Rake's Progress' (1732-3), where Bedlam is the last stage in the decline and fall of a young spendthrift,Tom Rakewell. With Hilary Marland Professor of History at the University of Warwick Justin Champion Professor of the History of Early Modern Ideas at Royal Holloway, University of London and President of the Historical Association And Jonathan Andrews Reader in the History of Psychiatry at Newcastle University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the Maya Civilization, developed by the Maya people, which flourished in central America from around 250 AD in great cities such as Chichen Itza and Uxmal with advances in mathematics, architecture and astronomy. Long before the Spanish Conquest in the 16th Century, major cities had been abandoned for reasons unknown, although there are many theories including overpopulation and changing climate. The hundreds of Maya sites across Belize, El Salvador, Guatemala, Honduras and Mexico raise intriguing questions about one of the world's great pre-industrial civilizations. With Elizabeth Graham Professor of Mesoamerican Archaeology at University College London Matthew Restall Edwin Erle Sparks Professor of Latin American History and Anthropology at Pennsylvania State University And Benjamin Vis Eastern ARC Research Fellow in Digital Humanities at the University of Kent Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the Vereenigde Oost-Indische Compagnie or VOC, known in English as the Dutch East India Company. The VOC dominated the spice trade between Asia and Europe for two hundred years, with the British East India Company a distant second. At its peak, the VOC had a virtual monopoly on nutmeg, mace, cloves and cinnamon, displacing the Portuguese and excluding the British, and were the only European traders allowed access to Japan. With Anne Goldgar Reader in Early Modern European History at King's College London Chris Nierstrasz Lecturer in Global History at Erasmus University, Rotterdam, formerly at the University of Warwick And Helen Paul Lecturer in Economics and Economic History at the University of Southampton Producer: Simon Tillotson.

Mary Magdalene is one of the best-known figures in the Bible and has been a frequent inspiration to artists and writers over the last 2000 years. According to the New Testament, she was at the foot of the cross when Jesus was crucified and was one of the first people to see Jesus after the resurrection. However, her identity has provoked a large amount of debate and in the Western Church she soon became conflated with two other figures mentioned in the Bible, a repentant sinner and Mary of Bethany. Texts discovered in the mid-20th century provoked controversy and raised further questions about the nature of her relations with Jesus. With: Joanne Anderson Lecturer in Art History at the Warburg Institute, School of Advanced Study, University of London Eamon Duffy Emeritus Professor of the History of Christianity at the University of Cambridge and Fellow of Magdalene College Joan Taylor Professor of Christian Origins and Second Temple Judaism at King's College London Producer: Victoria Brignell.

Melvyn Bragg and guests discuss the life and work of Robert Hooke (1635-1703) who worked for Robert Boyle and was curator of experiments at the Royal Society. The engraving of a flea, above, is taken from his Micrographia which caused a sensation when published in 1665. Sometimes remembered for his disputes with Newton, he studied the planets with telescopes and snowflakes with microscopes. He was an early proposer of a theory of evolution, discovered light diffraction with a wave theory to explain it and felt he was rarely given due credit for his discoveries. With David Wootton Anniversary Professor of History at the University of York Patricia Fara President Elect of the British Society for the History of Science And Rob Iliffe Professor of History of Science at Oxford University Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the poetry of Rumi, the Persian scholar and Sufi mystic of the 13th Century. His great poetic works are the Masnavi or "spiritual couplets" and the Divan, a collection of thousands of lyric poems. He is closely connected with four modern countries: Afghanistan, as he was born in Balkh, from which he gains the name Balkhi; Uzbekistan from his time in Samarkand as a child; Iran as he wrote in Persian; and Turkey for his work in Konya, where he spent most of his working life and where his followers established the Mevlevi Order, also known as the Whirling Dervishes. With Alan Williams British Academy Wolfson Research Professor at the University of Manchester Carole Hillenbrand Professor of Islamic History at the University of St Andrews and Professor Emerita of Edinburgh University And Lloyd Ridgeon Reader in Islamic Studies at the University of Glasgow Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the origins, development and uses of chromatography. In its basic form, it is familiar to generations of schoolchildren who put a spot of ink at the bottom of a strip of paper, dip it in water and then watch the pigments spread upwards, revealing their separate colours. Chemists in the 19th Century started to find new ways to separate mixtures and their work was taken further by Mikhail Tsvet, a Russian-Italian scientist who is often credited with inventing chromatography in 1900. The technique has become so widely used, it is now an integral part of testing the quality of air and water, the levels of drugs in athletes, in forensics and in the preparation of pharmaceuticals. With Andrea Sella Professor of Chemistry at University College London Apryll Stalcup Professor of Chemical Sciences at Dublin City University And Leon Barron Senior Lecturer in Forensic Science at King's College London.

Melvyn Bragg and guests discuss the life, times and influence of Eleanor of Aquitaine (c1122-1204) who was one of the most powerful women in Twelfth Century Europe, possibly in the entire Middle Ages. She inherited land from the Loire down to the Pyrenees, about a third of modern France. She married first the King of France, Louis VII, joining him on the Second Crusade. She became stronger still after their marriage was annulled, as her next husband, Henry Plantagenet became Henry II of England. Two of their sons, Richard and John, became kings and she ruled for them when they were abroad. By her death in her eighties, Eleanor had children and grandchildren in power across western Europe. This led to competing claims of inheritance and, for much of the next 250 years, the Plantagenet and French kings battled over Eleanor's land. With Lindy Grant Professor of Medieval History at the University of Reading Nicholas Vincent Professor of Medieval History at the University of East Anglia And Julie Barrau University Lecturer in British Medieval History at the University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Thomas Paine and his pamphlet "Common Sense" which was published in Philadelphia in January 1776 and promoted the argument for American independence from Britain. Addressed to The Inhabitants of America, it sold one hundred and fifty thousand copies in the first few months and is said, proportionately, to be the best-selling book in American history. Paine had arrived from England barely a year before. He vigorously attacked monarchy generally and George the Third in particular. He argued the colonies should abandon all hope of resolving their dispute with Britain and declare independence immediately. Many Americans were scandalised. More were inspired and, for Paine's vision of America's independent future, he has been called a Founding Father of the United States. With Kathleen Burk Professor Emerita of Modern and Contemporary History at University College London Nicholas Guyatt University Lecturer in American History at the University of Cambridge And Peter Thompson Associate Professor of American History at the University of Oxford and Fellow of St Cross College Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the planet Saturn with its rings of ice and rock and over 60 moons. In 1610, Galileo used an early telescope to observe Saturn, one of the brightest points in the night sky, but could not make sense of what he saw: perhaps two large moons on either side. When he looked a few years later, those supposed moons had disappeared. It was another forty years before Dutch scientist Christiaan Huygens solved the mystery, realizing the moons were really a system of rings. Successive astronomers added more detail, with the greatest leaps forward in the last forty years. The Pioneer 11 spacecraft and two Voyager missions have flown by, sending back the first close-up images, and Cassini is still there, in orbit, confirming Saturn, with its rings and many moons, as one of the most intriguing and beautiful planets in our Solar System. With Carolin Crawford Public Astronomer at the Institute of Astronomy and Fellow of Emmanuel College, University of Cambridge Michele Dougherty Professor of Space Physics at Imperial College London And Andrew Coates Deputy Director in charge of the Solar System at the Mullard Space Science Laboratory at UCL.

Melvyn Bragg and guests discuss Tristan and Iseult, one of the most popular stories of the Middle Ages. From roots in Celtic myth, it passed into written form in Britain a century after the Norman Conquest and almost immediately spread throughout northern Europe. It tells of a Cornish knight and an Irish queen, Tristan and Iseult, who accidentally drink a love potion, at the same time, on the same boat, travelling to Cornwall. She is due to marry Tristan's king, Mark. Tristan and Iseult seemed ideally matched and their love was heroic, but could that excuse their adultery, in the minds of medieval listeners, particularly when the Church was so clear they were wrong? With Laura Ashe Associate Professor of English at Worcester College, University of Oxford Juliette Wood Associate Lecturer in the School of Welsh at Cardiff University And Mark Chinca Reader in Medieval German Literature at the University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the eminent 19th-century scientist Michael Faraday. Born into a poor working-class family, he received little formal schooling but became interested in science while working as a bookbinder's apprentice. He is celebrated today for carrying out pioneering research into the relationship between electricity and magnetism. Faraday showed that if a wire was turned in the presence of a magnet or a magnet was turned in relation to a wire, an electric current was generated. This ground-breaking discovery led to the development of the electric generator and ultimately to modern power stations. During his life he became the most famous scientist in Britain and he played a key role in founding the Royal Institution's Christmas lectures which continue today. With: Geoffrey Cantor Professor Emeritus of the History of Science at the University of Leeds Laura Herz Professor of Physics at the University of Oxford Frank James Professor of the History of Science at the Royal Institution Producer: Victoria Brignell.

Melvyn Bragg and his guests discuss the evolution and role of Circadian Rhythms, the so-called body clock that influences an organism's daily cycle of physical, behavioural and mental changes. The rhythms are generated within organisms and also in response to external stimuli, mainly light and darkness. They are found throughout the living world, from bacteria to plants, fungi to animals and, in humans, are noticed most clearly in sleep patterns. With Russell Foster Professor of Circadian Neuroscience at the University of Oxford Debra Skene Professor of Neuroendocrinology at the University of Surrey And Steve Jones Emeritus Professor of Genetics at University College London.

Melvyn Bragg and guests discuss the origins and rise of Legalism in China, from the start of the Warring States Period (c475 - 221 BC) to the time of The First Emperor Qin Shi Huang (pictured), down to Chairman Mao and the present day. Advanced by the Qin statesman Shang Yang and later blended together by Han Fei, the three main aspects of Legalism were the firm implementation of laws, use of techniques such as responsibility and inscrutability, and taking advantage of the ruler's position. The Han dynasty that replaced the Qin discredited this philosophy for its apparent authoritarianism, but its influence continued, re-emerging throughout Chinese history. With Frances Wood Former Curator of the Chinese Collections at the British Library Hilde de Weerdt Professor of Chinese History at Leiden University And Roel Sterckx Joseph Needham Professor of Chinese History at the University of Cambridge. Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the scientific advances made in the three voyages of Captain James Cook, from 1768 to 1779. Cook's voyages astonished Europeans, bringing back detailed knowledge of the Pacific and its people, from the Antarctic to the Bering Straits. This topic is one of more than a thousand different ideas suggested by listeners in October and came from Alysoun Hodges in the UK, Fiachra O'Brolchain in Ireland, Mhairi Mackay in New Zealand, Enzo Vozzo in Australia, Jeff Radford in British Columbia and Mark Green in Alaska. With Simon Schaffer Professor of the History of Science at the University of Cambridge Rebekah Higgitt Lecturer in the History of Science at the University of Kent And Sophie Forgan Retired Principle Lecturer at the University of Teesside Chairman of Trustees of the Captain Cook Museum, Whitby Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the outbreak of witch trials in Massachusetts in 1692-3, centred on Salem, which led to the execution of twenty people, with more dying in prison before or after trial. Some were men, including Giles Corey who died after being pressed with heavy rocks, but the majority were women. At its peak, around 150 people were suspected of witchcraft, including the wife of the governor who had established the trials. Many of the claims of witchcraft arose from personal rivalries in an area known for unrest, but were examined and upheld by the courts at a time of mass hysteria, belief in the devil, fear of attack by Native Americans and religious divisions. With Susan Castillo-Street Harriet Beecher Stowe Professor Emerita of American Studies at King's College London Simon Middleton Senior Lecturer in American History at the University of Sheffield And Marion Gibson Professor of Renaissance and Magical Literatures at Exeter University, Penryn Campus. Producer: Simon Tillotson.

"Emma Woodhouse, handsome, clever, and rich, with a comfortable home and happy disposition, seemed to unite some of the best blessings of existence; and had lived nearly twenty-one years in the world with very little to distress or vex her." So begins Emma by Jane Austen, describing her leading character who, she said, was "a heroine whom no-one but myself will much like." Melvyn Bragg and guests discuss this, one of Austen's most popular novels and arguably her masterpiece, a brilliantly sparkling comedy of manners published in December 1815 by John Murray, the last to be published in Austen's lifetime. This followed Sense and Sensibility (1811), Pride and Prejudice (1813) and Mansfield Park (1814), with her brother Henry handling publication of Northanger Abbey and Persuasion (1817). With Janet Todd Professor Emerita of Literature, University of Aberdeen and Honorary Fellow of Newnham College, Cambridge John Mullan Professor of English at University College, London And Emma Clery Professor of English at the University of Southampton. Producer: Simon Tillotson.

Melvyn Bragg and guests discuss The Battle of Lepanto, 1571, the last great sea battle between galleys, in which the Catholic fleet of the Holy League of principally Venice, Spain, the Papal States, Malta, Genoa, and Savoy defeated the Ottoman forces of Selim II. When much of Europe was divided over the Reformation, this was the first major victory of a Christian force over a Turkish fleet. The battle followed the Ottoman invasion of Venetian Cyprus and decades in which the Venetians had been trying to stop the broader westward expansion of the Ottomans into the Mediterranean. The outcome had a great impact on morale in Europe and Pope Pius V established a feast day of Our Lady of Victory. Some historians call it the most significant sea battle since Actium (31 BC). However, the Ottomans viewed the loss as less significant than their victory in Cyprus and, within two years, the Holy League had broken up. With Diarmaid MacCulloch Professor of the History of the Church at the University of Oxford Kate Fleet Director of the Skilliter Centre for Ottoman Studies and Fellow of Newnham College, University of Cambridge And Noel Malcolm A Senior Research Fellow in History at All Soul's College, University of Oxford Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the problem of P versus NP, which has a bearing on online security. There is a $1,000,000 prize on offer from the Clay Mathematical Institute for the first person to come up with a complete solution. At its heart is the question "are there problems for which the answers can be checked by computers, but not found in a reasonable time?" If the answer to that is yes, then P does not equal NP. However, if all answers can be found easily as well as checked, if only we knew how, then P equals NP. The area has intrigued mathematicians and computer scientists since Alan Turing, in 1936, found that it's impossible to decide in general whether an algorithm will run forever on some problems. Resting on P versus NP is the security of all online transactions which are currently encrypted: if it transpires that P=NP, if answers could be found as easily as checked, computers could crack passwords in moments. With Colva Roney-Dougal Reader in Pure Mathematics at the University of St Andrews Timothy Gowers Royal Society Research Professor in Mathematics at the University of Cambridge And Leslie Ann Goldberg Professor of Computer Science and Fellow of St Edmund Hall, University of Oxford Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the Empire of Mali which flourished from 1200 to 1600 and was famous in the wider world for the wealth of rulers such as Mansa Musa. Mali was the largest empire in west Africa and for almost 400 years controlled the flow of gold from mines in the south up to the Mediterranean coast and across to the Middle East. These gold mines were the richest known deposits in the 14th Century and produced around half of the world's gold. When Mansa Musa journeyed to Cairo in 1324 as part of his Hajj, he distributed so much gold that its value depreciated by over 10%. Some of the mosques he built on his return survive, albeit rebuilt, such as the UNESCO World Heritage Site of the Great Mosque of Djenne. With Amira Bennison Reader in the History and Culture of the Maghrib at the University of Cambridge Marie Rodet Senior Lecturer in the History of Africa at SOAS And Kevin MacDonald Professor of African Archaeology Chair of the African Studies Programme at University College, London Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Simone de Beauvoir. "One is not born, but rather becomes, a woman," she wrote in her best known and most influential work, The Second Sex, her exploration of what it means to be a woman in a world defined by men. Published in 1949, it was an immediate success with the thousands of women who bought it. Many male critics felt men came out of it rather badly. Beauvoir was born in 1908 to a high bourgeois family and it was perhaps her good fortune that her father lost his money when she was a girl. With no dowry, she pursued her education in Paris to get work and in a key exam to allow her to teach philosophy, came second only to Jean Paul Sartre. He was retaking. They became lovers and, for the rest of their lives together, intellectual sparring partners. Sartre concentrated on existentialist philosophy; Beauvoir explored that, and existentialist ethics, plus the novel and, increasingly in the decades up to her death in 1986, the situation of women in the world. With Christina Howells Professor of French and Fellow of Wadham College at the University of Oxford Margaret Atack Professor of French at the University of Leeds And Ursula Tidd Professor of Modern French Literature and Thought at the University of Manchester Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the life and work of Hans Holbein the Younger (1497-1543) during his two extended stays in England, when he worked at the Tudor Court and became the King's painter. Holbein created some of the most significant portraits of his age, including an image of Henry VIII, looking straight at the viewer, hands on hips, that has dominated perceptions of him since. The original at Whitehall Palace was said to make visitors tremble at its majesty. Holbein was later sent to Europe to paint the women who might be Henry's fourth wife; his depiction of Anne of Cleves was enough to encourage Henry to marry her, a decision Henry quickly regretted and for which Thomas Cromwell, her supporter, was executed. His paintings still shape the way we see those in and around the Tudor Court, including Cromwell, Thomas More, the infant Prince Edward (of which there is a detail, above), The Ambassadors and, of course, Henry the Eighth himself. With Susan Foister Curator of Early Netherlandish, German and British Painting at the National Gallery John Guy A fellow of Clare College, University of Cambridge And Maria Hayward Professor of Early Modern History at the University of Southampton Producer: Simon Tillotson.

Alexander the Great is one of the most celebrated military commanders in history. Born into the Macedonian royal family in 356 BC, he gained control of Greece and went on to conquer the Persian Empire, defeating its powerful king, Darius III. At its peak, Alexander's empire covered modern Turkey, Syria, Egypt, Iran, Iraq, Afghanistan, Pakistan and part of India. As a result, Greek culture and language was spread into regions it had not penetrated before, and he is also remembered for founding a number of cities. Over the last 2,000 years, the legend of Alexander has grown and he has influenced numerous generals and politicians. With: Paul Cartledge Emeritus Professor of Greek Culture and AG Leventis Senior Research Fellow at Clare College, University of Cambridge Diana Spencer Professor of Classics at the University of Birmingham Rachel Mairs Lecturer in Classics at the University of Reading Producer: Victoria Brignell.

Melvyn Bragg and guests discuss the rise of the idea of perpetual motion and its decline, in the 19th Century, with the Laws of Thermodynamics. For hundreds of years, some of the greatest names in science thought there might be machines that could power themselves endlessly. Leonardo Da Vinci tested the idea of a constantly-spinning wheel and Robert Boyle tried to recirculate water from a draining flask. Gottfried Leibniz supported a friend, Orffyreus, who claimed he had built an ever-rotating wheel. An increasing number of scientists voiced their doubts about perpetual motion, from the time of Galileo, but none could prove it was impossible. For scientists, the designs were a way of exploring the laws of nature. Others claimed their inventions actually worked, and promised a limitless supply of energy. It was not until the 19th Century that the picture became clearer, with the experiments of James Joule and Robert Mayer on the links between heat and work, and the establishment of the First and Second Laws of Thermodynamics. With Ruth Gregory Professor of Mathematics and Physics at Durham University Frank Close Professor Emeritus of Physics at the University of Oxford and Steven Bramwell Professor of Physics and former Professor of Chemistry at University College London Producer: Simon Tillotson.

Born near Mexico City in 1907, Frida Kahlo is considered one of Mexico's greatest artists. She took up painting after a bus accident left her severely injured, was a Communist, married Diego Rivera, a celebrated muralist, became friends with Trotsky and developed an iconic series of self-portraits. Her work brings together elements such as surrealism, pop culture, Aztec and Indian mythology and commentary on Mexican culture. In 1938, artist and poet Andre Breton organised an exhibition of her work in New York, writing in the catalogue, "The Art of Frida Kahlo is a ribbon around a bomb." She was not as widely appreciated during her lifetime as she has since become, but is now one of the most recognised artists of the 20th century. With Patience Schell Chair in Hispanic Studies at the University of Aberdeen Valerie Fraser Emeritus Professor of Latin American Art at the University of Essex And Alan Knight Emeritus Professor of the History of Latin America at the University of Oxford Producer: Simon Tillotson.

Frederick the Great ruled Prussia from 1740 until his death in 1786. Born in 1712, he increased the power of the state, he made Prussia the leading military power in Europe and his bold campaigns had great implications for the European political landscape. An absolute monarch in the age of enlightenment, he was a prolific writer, attracted figures such as Voltaire to his court, fostered education and put Berlin firmly on the cultural map. He was much admired by Napoleon and was often romanticised by German historians, becoming a hero for many in united Germany in the 19th and 20th centuries. Others, however, vilified him for aspects such as his militarism and the partition of Poland. With Tim Blanning Emeritus Professor of Modern European History at the University of Cambridge Katrin Kohl Professor of German Literature at the University of Oxford and a Fellow of Jesus College And Thomas Biskup Lecturer in Early Modern History at the University of Hull Producer: Simon Tillotson.

In 1977, scientists in the submersible "Alvin" were exploring the deep ocean bed off the Galapagos Islands. In the dark, they discovered hydrothermal vents, like chimneys, from which superheated water flowed. Around the vents there was an extraordinary variety of life, feeding on microbes which were thriving in the acidity and extreme temperature of the vents. While it was already known that some microbes are extremophiles, thriving in extreme conditions, such as the springs and geysers of Yellowstone Park (pictured), that had not prepared scientists for what they now found. Since the "Alvin" discovery, the increased study of extremophile microbes has revealed much about what is and is not needed to sustain life on Earth and given rise to new theories about how and where life began. It has also suggested forms and places in which life might be found elsewhere in the Universe. With Monica Grady Professor of Planetary and Space Sciences at the Open University Ian Crawford Professor of Planetary Science and Astrobiology at Birkbeck University of London And Nick Lane Reader in Evolutionary Biochemistry at University College London Producer: Simon Tillotson.

The story of Jane Eyre is one of the best-known in English fiction. Jane is the orphan who survives a miserable early life, first with her aunt at Gateshead Hall and then at Lowood School. She leaves the school for Thornfield Hall, to become governess to the French ward of Mr Rochester. She and Rochester fall in love but, at their wedding, it is revealed he is married already and his wife, insane, is kept in Thornfield's attic. When Jane Eyre was published in 1847, it was a great success and brought fame to Charlotte Bronte. Combined with Gothic mystery and horror, the book explores many themes, including the treatment of children, relations between men and women, religious faith and hypocrisy, individuality, morality, equality and the nature of true love. With Dinah Birch Professor of English Literature and Pro-Vice-Chancellor for Research at the University of Liverpool Karen O'Brien Vice Principal and Professor of English Literature at King's College London And Sara Lyons Lecturer in Victorian Literature at the University of Kent Producer: Simon Tillotson.

A moral theory that emphasises ends over means, Utilitarianism holds that a good act is one that increases pleasure in the world and decreases pain. The tradition flourished in the eighteenth and nineteenth centuries with Jeremy Bentham and John Stuart Mill, and has antecedents in ancient philosophy. According to Bentham, happiness is the means for assessing the utility of an act, declaring "it is the greatest happiness of the greatest number that is the measure of right and wrong." Mill and others went on to refine and challenge Bentham's views and to defend them from critics such as Thomas Carlyle, who termed Utilitarianism a "doctrine worthy only of swine." With Melissa Lane The Class of 1943 Professor of Politics at Princeton University Janet Radcliffe Richards Professor of Practical Philosophy at the University of Oxford and Brad Hooker A Professor of Philosophy at the University of Reading Producer: Simon Tillotson.

In the Middle Ages, Prester John was seen as the great hope for Crusaders struggling to hold on to, then regain, Jerusalem. He was thought to rule a lost Christian kingdom somewhere in the East and was ready to attack Muslim opponents with his enormous armies. There was apparent proof of Prester John's existence, in letters purportedly from him and in stories from travelers who claimed they had met, if not him, then people who had news of him. Most pointed to a home in the earthly paradise in the Indies, outside Eden, with fantastical animals and unimaginable riches. Later, Portuguese explorers thought they had found him in Ethiopia, despite the mystified denials of people there. Melvyn Bragg asks why the legend was so strongly believed for so long, and what facts helped sustain the myths. With Marianne O'Doherty Associate Professor in English at the University of Southampton Martin Palmer Director of the International Consultancy on Religion, Education, and Culture And Amanda Power Senior Lecturer in Medieval History at the University of Sheffield. Producer: Simon Tillotson.

While glass items have been made for at least 5,000 years, scientists are yet to explain, conclusively, what happens when the substance it's made from moves from a molten state to its hard, transparent phase. It is said to be one of the great unsolved problems in physics. While apparently solid, the glass retains certain properties of a liquid. At times, ways of making glass have been highly confidential; in Venice in the Middle Ages, disclosure of manufacturing techniques was a capital offence. Despite the complexity and mystery of the science of glass, glass technology has continued to advance from sheet glass to crystal glass, optical glass and prisms, to float glasses, chemical glassware, fibre optics and metal glasses. With: Dame Athene Donald Professor of Experimental Physics at the University of Cambridge and Master of Churchill College, Cambridge Jim Bennett Former Director of the Museum of the History of Science at the University of Oxford and Keeper Emeritus at the Science Museum Paul McMillan Professor of Chemistry at University College London Producer: Simon Tillotson.

It is said that, in Britain from the 18th Century, copies of Josephus' works were as widespread and as well read as The Bible. Christians valued "The Antiquities of the Jews" in particular, for the retelling of parts of the Old Testament and apparently corroborating the historical existence of Jesus. Born Joseph son of Matthias, in Jerusalem, in 37AD, he fought the Romans in Galilee in the First Jewish-Roman War. He was captured by Vespasian's troops and became a Roman citizen, later describing the siege and fall of Jerusalem. His actions and writings made him a controversial figure, from his lifetime to the present day. With Tessa Rajak Professor Emeritus of Ancient History, University of Reading Philip Alexander Professor Emeritus of Jewish Studies, University of Manchester And Martin Goodman Professor of Jewish Studies, University of Oxford and President of the Oxford Centre for Hebrew and Jewish Studies Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the Cotton Famine in Lancashire from 1861-65. The Famine followed the blockade of Confederate Southern ports during the American Civil War which stopped the flow of cotton into mills in Britain and Europe. Reports at the time told of starvation, mass unemployment and migration. Abraham Lincoln wrote, "I know and deeply deplore the sufferings which the working-men of Manchester, and in all Europe, are called to endure in this crisis." While the full cause and extent of the Famine in Lancashire are disputed, the consequences of this and the cotton blockade were far reaching. With Lawrence Goldman Director of the Institute of Historical Research at the University of London Emma Griffin Professor of History at the University of East Anglia And David Brown Senior Lecturer in American Studies at University of Manchester Producer: Simon Tillotson.

Rabindranath Tagore was the first non-European to win a Nobel Prize for Literature. He has been called one of the outstanding thinkers of the 20th century and the greatest poet India has ever produced. His Nobel followed publication of Gitanjali, his English version of some of his Bengali poems. WB Yeats and Ezra Pound were great supporters. Tagore was born in Calcutta in 1861 and educated partly in Britain; King George V knighted him, but Tagore renounced this in 1919 following the Amritsar Massacre. A key figure in Indian nationalism, Tagore became a friend of Gandhi, offering criticism as well as support. A polymath and progressive, Tagore painted, wrote plays, novels, short stories and many songs. The national anthems of India and Bangladesh are based on his poems. With Chandrika Kaul Lecturer in Modern History at the University of St Andrews Bashabi Fraser Professor of English Literature and Creative Writing at Edinburgh Napier University And John Stevens Leverhulme Postdoctoral Fellow at SOAS, University of London Producer: Simon Tillotson.

Melvyn Bragg and his guests discuss the Earth's Core. The inner core is an extremely dense, solid ball of iron and nickel, the size of the Moon, while the outer core is a flowing liquid, the size of Mars. Thanks to the magnetic fields produced within the core, life on Earth is possible. The magnetosphere protects the Earth from much of the Sun's radiation and the flow of particles which would otherwise strip away the atmosphere. The precise structure of the core and its properties have been fascinating scientists from the Renaissance. Recent seismographs show the picture is even more complex than we might have imagined, with suggestions that the core is spinning at a different speed and on a different axis from the surface. With Stephen Blundell Professor of Physics and Fellow of Mansfield College at the University of Oxford Arwen Deuss Associate Professor in Seismology at Utrecht University and Simon Redfern Professor of Mineral Physics at the University of Cambridge Producer: Simon Tillotson.

Melvyn Bragg and his guests discuss the life and work of the 18th-century novelist, playwright and diarist Fanny Burney, also known as Madame D'Arblay and Frances Burney. Her first novel, Evelina, was published anonymously and caused a sensation, attracting the admiration of many eminent contemporaries. In an era when very few women published their work she achieved extraordinary success, and her admirers included Dr Johnson and Edmund Burke; later Virginia Woolf called her 'the mother of English fiction'. With Nicole Pohl Reader in English Literature at Oxford Brookes University Judith Hawley Professor of Eighteenth-Century Literature at Royal Holloway, University of London and John Mullan Professor of English at University College London. Producer: Simon Tillotson.

Melvyn Bragg and his guests discuss the life of Matteo Ricci, a Jesuit priest who in the 16th century led a Christian mission to China. An accomplished scholar, Ricci travelled extensively and came into contact with senior officials of the Ming Dynasty administration. His story is one of the most important encounters between Renaissance Europe and a China which was still virtually closed to outsiders. With Mary Laven Reader in Early Modern History at the University of Cambridge Craig Clunas Professor of the History of Art at the University of Oxford and Anne Gerritsen Reader in History at the University of Warwick Producer: Simon Tillotson.

Melvyn Bragg and his guests discuss the Greek poet Sappho. Born in the late seventh century BC, Sappho spent much of her life on the island of Lesbos. In antiquity she was famed as one of the greatest lyric poets, but owing to a series of accidents the bulk of her work was lost to posterity. The fragments that do survive, however, give a tantalising glimpse of a unique voice of Greek literature. Her work has lived on in other languages, too, translated by such major poets as Ovid, Christina Rossetti and Baudelaire. With Edith Hall Professor of Classics at King's College, London Margaret Reynolds Professor of English at Queen Mary, University of London and Dirk Obbink Professor of Papyrology and Greek Literature at the University of Oxford Fellow and tutor at Christ Church, Oxford Producer: Simon Tillotson.

Melvyn Bragg and his guests discuss the California Gold Rush. In 1849 the recent discovery of gold at Coloma, near Sacramento in California, led to a massive influx of prospectors seeking to make their fortunes. Within a couple of years the tiny settlement of San Francisco had become a major city, with tens of thousands of immigrants, the so-called Forty-Niners, arriving by boat and over land. The gold rush transformed the west coast of America and its economy, but also uprooted local populations of Native Americans and made irreversible changes to natural habitats. With: Kathleen Burk Professor of Modern and Contemporary History at University College London Jacqueline Fear-Segal Reader in American History and Culture at the University of East Anglia Frank Cogliano Professor of American History at the University of Edinburgh.

Melvyn Bragg and his guests discuss the scientific achievements of the Curie family. In 1903 Marie and Pierre Curie shared a Nobel Prize in Physics with Henri Becquerel for their work on radioactivity, a term which Marie coined. Marie went on to win a Nobel in Chemistry eight years later; remarkably, her daughter Irène Joliot-Curie would later share a Nobel with her husband Frédéric Joliot-Curie for their discovery that it was possible to create radioactive materials in the laboratory. The work of the Curies added immensely to our knowledge of fundamental physics and paved the way for modern treatments for cancer and other illnesses. With: Patricia Fara Senior Tutor of Clare College, University of Cambridge Robert Fox Emeritus Professor of the History of Science at the University of Oxford Steven T Bramwell Professor of Physics and former Professor of Chemistry at University College London Producer: Simon Tillotson.

Melvyn Bragg and his guests discuss the life and work of Al-Ghazali, a major philosopher and theologian of the late 11th century. Born in Persia, he was one of the most prominent intellectuals of his age, working in such centres of learning as Baghdad, Damascus and Jerusalem. He is now seen as a key figure in the development of Islamic thought, not just refining the theology of Islam but also building on the existing philosophical tradition inherited from the ancient Greeks. With: Peter Adamson Professor of Late Ancient and Arabic Philosophy at the LMU in Munich Carole Hillenbrand Professor of Islamic History at Edinburgh and St Andrews Universities Robert Gleave Professor of Arabic Studies at the University of Exeter Producer: Victoria Brignell.

Melvyn Bragg and his guests discuss dark matter, the mysterious and invisible substance which is believed to make up most of the Universe. In 1932 the Dutch astronomer Jan Oort noticed that the speed at which galaxies moved was at odds with the amount of material they appeared to contain. He hypothesized that much of this 'missing' matter was simply invisible to telescopes. Today astronomers and particle physicists are still fascinated by the search for dark matter and the question of what it is. With Carolin Crawford Public Astronomer at the Institute of Astronomy, University of Cambridge and Gresham Professor of Astronomy Carlos Frenk Ogden Professor of Fundamental Physics and Director of the Institute for Computational Cosmology at the University of Durham Anne Green Reader in Physics at the University of Nottingham Producer: Simon Tillotson.

Melvyn Bragg and his guests discuss the epic poem Beowulf, one of the masterpieces of Anglo-Saxon literature. Composed in the early Middle Ages by an anonymous poet, the work tells the story of a Scandinavian hero whose feats include battles with the fearsome monster Grendel and a fire-breathing dragon. It survives in a single manuscript dating from around 1000 AD, and was almost completely unknown until its rediscovery in the nineteenth century. Since then it has been translated into modern English by writers including William Morris, JRR Tolkien and Seamus Heaney, and inspired poems, novels and films. With: Laura Ashe Associate Professor in English at the University of Oxford and Fellow of Worcester College Clare Lees Professor of Medieval English Literature and History of the Language at King's College London Andy Orchard Rawlinson and Bosworth Professor of Anglo-Saxon at the University of Oxford Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the history and significance of eunuchs, castrated men who were a common feature of many civilisations for at least three thousand years. Eunuchs were typically employed as servants in royal households in the ancient Middle East, China and classical antiquity. In some civilisations they were used as administrators or senior military commanders, sometimes achieving high office. The tradition lingered until surprisingly recently, with castrated singers remaining a feature of Vatican choirs until the nineteenth century, while the last Chinese eunuch of the imperial court died in 1996. With: Karen Radner Professor of Ancient Near Eastern History at University College London Shaun Tougher Reader in Ancient History at Cardiff University Michael Hoeckelmann British Academy Postdoctoral Fellow in the Department of History at King's College London Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Adam Smith's celebrated economic treatise The Wealth of Nations. Smith was one of Scotland's greatest thinkers, a moral philosopher and pioneer of economic theory whose 1776 masterpiece has come to define classical economics. Based on his careful consideration of the transformation wrought on the British economy by the Industrial Revolution, and how it contrasted with marketplaces elsewhere in the world, the book outlined a theory of wealth and how it is accumulated that has arguably had more influence on economic theory than any other. With: Richard Whatmore Professor of Modern History and Director of the Institute of Intellectual History at the University of St Andrews Donald Winch Emeritus Professor of Intellectual History at the University of Sussex Helen Paul Lecturer in Economics and Economic History at the University of Southampton Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the photon, one of the most enigmatic objects in the Universe. Generations of scientists have struggled to understand the nature of light. In the late nineteenth century it seemed clear that light was an electromagnetic wave. But the work of physicists including Planck and Einstein shed doubt on this theory. Today scientists accept that light can behave both as a wave and a particle, the latter known as the photon. Understanding light in terms of photons has enabled the development of some of the most important technology of the last fifty years. With: Frank Close Professor Emeritus of Physics at the University of Oxford Wendy Flavell Professor of Surface Physics at the University of Manchester Susan Cartwright Senior Lecturer in Physics and Astronomy at the University of Sheffield. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Indian Emperor Ashoka. Active in the 3rd century BC, Ashoka conquered almost all of the landmass covered by modern-day India, creating the largest empire South Asia had ever known. After his campaign of conquest he converted to Buddhism, and spread the religion throughout his domain. His edicts were inscribed on the sides of an extraordinary collection of stone pillars spread far and wide across his empire, many of which survive today. Our knowledge of ancient India and its chronology, and how this aligns with the history of Europe, is largely dependent on this important set of inscriptions, which were deciphered only in the nineteenth century. With: Jessica Frazier Lecturer in Religious Studies at the University of Kent and a Research Fellow at the Oxford Centre for Hindu Studies Naomi Appleton Chancellor's Fellow in Religious Studies at the University of Edinburgh Richard Gombrich Founder and Academic Director of the Oxford Centre for Buddhist Studies and Emeritus Professor of Sanskrit at the University of Oxford Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the ancient Greek historian Thucydides. In the fifth century BC Thucydides wrote The History of the Peloponnesian War, an account of a conflict in which he had himself taken part. This work is now seen as one of the first great masterpieces of history writing, a book which influenced writers for centuries afterwards. Thucydides was arguably the first historian to make a conscious attempt to be objective, bringing a rational and impartial approach to his scholarship. Today his work is still widely studied at military colleges and in the field of international relations for the insight it brings to bear on complex political situations. With: Paul Cartledge Emeritus Professor of Greek Culture and AG Leventis Senior Research Fellow at Clare College, Cambridge Katherine Harloe Associate Professor in Classics and Intellectual History at the University of Reading Neville Morley Professor of Ancient History at the University of Bristol Producer: Thomas Morris.

Melvyn Bragg and guests discuss phenomenology, a style of philosophy developed by the German thinker Edmund Husserl in the first decades of the 20th century. Husserl's initial insights underwent a radical transformation in the work of his student Martin Heidegger, and played a key role in the development of French philosophy at the hands of writers like Emmanuel Levinas, Jean-Paul Sartre, Simone de Beauvoir and Maurice Merleau-Ponty. Phenomenology has been a remarkably adaptable approach to philosophy. It has given its proponents a platform to expose and critique the basic assumptions of past philosophy, and to talk about everything from the foundations of geometry to the difference between fear and anxiety. It has also been instrumental in getting philosophy out of the seminar room and making it relevant to the lives people actually lead. GUESTS Simon Glendinning, Professor of European Philosophy in the European Institute at the London School of Economics Joanna Hodge, Professor of Philosophy at Manchester Metropolitan University Stephen Mulhall, Professor of Philosophy and Tutor at New College at the University of Oxford Producer: Luke Mulhall.

Melvyn Bragg and guests discuss Pieter Bruegel the Elder's painting of 1559, 'The Fight Between Carnival And Lent'. Created in Antwerp at a time of religious tension between Catholics and Protestants, the painting is rich in detail and seems ripe for interpretation. But Bruegel is notoriously difficult to interpret. His art seems to reject the preoccupations of the Italian Renaissance, drawing instead on techniques associated with the new technology of the 16th century, print. Was Bruegel using his art to comment on the controversies of his day? If so, what comment was he making? CONTRIBUTORS Louise Milne, Lecturer in Visual Culture in the School of Art at the University of Edinburgh and Edinburgh Napier University Jeanne Nuechterlein, Senior Lecturer in the Department of History of Art, University of York Miri Rubin, Professor of Medieval and Early Modern History and Head of the School of History at Queen Mary, University of London Producer: Luke Mulhall.

Melvyn Bragg and his guests discuss the philosophy of truth. Pontius Pilate famously asked: what is truth? In the twentieth century, the nature of truth became a subject of particular interest to philosophers, but they preferred to ask a slightly different question: what does it mean to say of any particular statement that it is true? What is the difference between these two questions, and how useful is the second of them? With: Simon Blackburn Fellow of Trinity College, University of Cambridge, and Professor of Philosophy at the New College of the Humanities Jennifer Hornsby Professor of Philosophy at Birkbeck, University of London Crispin Wright Regius Professor of Logic at the University of Aberdeen, and Professor of Philosophy at New York University Producer: Victoria Brignell and Luke Mulhall.

Melvyn Bragg and guests discuss Behavioural Ecology, the scientific study of animal behaviour. What factors influence where and what an animal chooses to eat? Why do some animals mate for life whilst others are promiscuous? Behavioural ecologists approach questions like these using Darwin's theory of natural selection, along with ideas drawn from game theory and the economics of consumer choice. Scientists had always been interested in why animals behave as they do, but before behavioural ecology this area of zoology never got much beyond a collection of interesting anecdotes. Behavioural ecology gave researchers techniques for constructing rigorous mathematical models of how animals act under different circumstances, and for predicting how they will react if circumstances change. Behavioural ecology emerged as a branch of zoology in the second half of the 20th century and proponents say it revolutionized our understanding of animals in their environments. GUESTS Steve Jones, Emeritus Professor of Genetics at University College London Rebecca Kilner, Professor of Evolutionary Biology at the University of Cambridge John Krebs, Principal of Jesus College at the University of Oxford Producer: Luke Mulhall.

Melvyn Bragg and guests discuss Zen. It's often thought of as a form of Buddhism that emphasises the practice of meditation over any particular set of beliefs. In fact Zen belongs to a particular intellectual tradition within Buddhism that took root in China in the 6th century AD. It spread to Japan in the early Middle Ages, where Zen practitioners set up religious institutions like temples, monasteries and universities that remain important today. GUESTS Tim Barrett, Emeritus Professor in the Department of the Study of Religions at SOAS, University of London Lucia Dolce, Numata Reader in Japanese Buddhism at SOAS, University of London Eric Greene, Lecturer in East Asian Religions at the University of Bristol Producer: Luke Mulhall.

Melvyn Bragg and guests discuss Franz Kafka's novel of power and alienation 'The Trial', in which readers follow the protagonist Joseph K into a bizarre, nightmarish world in which he stands accused of an unknown crime; courts of interrogation convene in obscure tenement buildings; and there seems to be no escape from a crushing, oppressive bureaucracy. Kafka was a German-speaking Jew who lived in the Czech city of Prague, during the turbulent years which followed the First World War. He spent his days working as a lawyer for an insurance company, but by night he wrote stories and novels considered some of the high points of twentieth century literature. His explorations of power and alienation have chimed with existentialists, Marxists, psychoanalysts, postmodernists - and Radio 4 listeners, who suggested this as our topic for listener week on In Our Time. GUESTS Elizabeth Boa, Professor Emerita of German at the University of Nottingham Steve Connor, Grace 2 Professor of English at the University of Cambridge Ritchie Robertson, Taylor Professor of the German Language and Literature at the University of Oxford Producer: Luke Mulhall.

Melvyn Bragg and guests discuss Aesop. According to some accounts, Aesop was a strikingly ugly slave who was dumb until granted the power of speech by the goddess Isis. In stories of his life he's often found outwitting his masters using clever wordplay, but he's best known today as the supposed author of a series of fables that are some of the most enduringly popular works of Ancient Greek literature. Some modern scholars question whether he existed at all, but the body of work that has come down to us under his name gives us a rare glimpse of the popular culture of the Ancient World. WITH Pavlos Avlamis, Junior Research Fellow in Classics at Trinity College at the University of Oxford Simon Goldhill, Professor of Greek Literature and Culture at the University of Cambridge Lucy Grig, Senior Lecturer in Classics at the University of Edinburgh Producer: Luke Mulhall.

Melvyn Bragg and guests discuss Isambard Kingdom Brunel, the Victorian engineer responsible for bridges, tunnels and railways still in use today more than 150 years after they were built. Brunel represented the cutting edge of technological innovation in Victorian Britain, and his life gives us a window onto the social changes that accompanied the Industrial Revolution. Yet his work was not always successful, and his innovative approach to engineering projects was often greeted with suspicion from investors. Guests: Julia Elton, former President of the Newcomen Society for the History of Engineering and Technology Ben Marsden, Senior Lecturer in the School of Divinity, History and Philosophy at the University of Aberdeen Crosbie Smith, Professor of the History of Science at the University of Kent Producer: Luke Mulhall.

Melvyn Bragg and guests discuss the Egyptian pharaoh Hatshepsut, whose name means 'foremost of noble ladies'. She ruled Egypt from about 1479 - 1458 BC and some scholars argue that she was one of the most successful and influential pharaohs. When she came to the throne, Egypt was still recovering from a period of turbulence known as the Second Intermediate Period a few generations earlier. Hatshepsut reasserted Egyptian power by building up international trade and commissioned buildings considered masterpieces of Egyptian architecture. She also made significant changes to the ideology surrounding the pharaoh and the gods. However, following her death, her name was erased from the records and left out of ancient lists of Egyptian kings. With: Elizabeth Frood Associate Professor of Egyptology at the University of Oxford Kate Spence Lecturer in Egyptian Archaeology at the University of Cambridge Campbell Price Curator of Egypt and Sudan at The Manchester Museum Producer: Victoria Brignell.

Melvyn Bragg and his guests discuss nuclear fusion, the process that powers stars. In the 1920s physicists predicted that it might be possible to generate huge amounts of energy by fusing atomic nuclei together, a reaction requiring enormous temperatures and pressures. Today we know that this complex reaction is what keeps the Sun shining. Scientists have achieved fusion in the laboratory and in nuclear weapons; today it is seen as a likely future source of limitless and clean energy. Guests: Philippa Browning, Professor of Astrophysics at the University of Manchester Steve Cowley, Chief Executive of the United Kingdom Atomic Energy Authority Justin Wark, Professor of Physics and fellow of Trinity College at the University of Oxford Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Haitian Revolution. In 1791 an uprising began in the French colonial territory of St Domingue. Partly a consequence of the French Revolution and partly a backlash against the brutality of slave owners, it turned into a complex struggle involving not just the residents of the island but French, English and Spanish forces. By 1804 the former slaves had won, establishing the first independent state in Latin America and the first nation to be created as a result of a successful slave rebellion. But the revolution also created one of the world's most impoverished societies, a legacy which Haiti has struggled to escape. Contributors Kate Hodgson, Postdoctoral Research Fellow in French at the University of Liverpool Tim Lockley, Reader in American Studies at the University of Warwick Karen Salt, Fellow in History in the School of Language and Literature at the University of Aberdeen Producer: Luke Mulhall.

Melvyn Bragg and his guests discuss the life and work of Rudyard Kipling. Born in Bombay in 1865, Kipling has been described as the poet of Empire, celebrated for fictional works including Kim and The Jungle Book. Today his poem 'If--' remains one of the best known in the English language. Kipling was amongst the first writers in English to develop the short story as a literary form in its own right, and was the first British recipient of a Nobel Prize for Literature. A literary celebrity of the Edwardian era, Kipling's work for the Commonwealth War Graves Commission played a major role in Britain's cultural response to the First World War. Contributors: Howard Booth, Senior Lecturer in English Literature at the University of Manchester Daniel Karlin, Winterstoke Professor of English Literature at the University of Bristol Jan Montefiore, Professor of Twentieth Century English Literature at the University of Kent Producer: Luke Mulhall.

Melvyn Bragg and his guests discuss the Battle of Talas, a significant encounter between Arab and Chinese forces which took place in central Asia in 751 AD. It brought together two mighty empires, the Abbasid Caliphate and the Tang Dynasty, and although not well known today the battle had profound consequences for the future of both civilisations. The Arabs won the confrontation, but the battle marks the point where the Islamic Empire halted its march eastwards, and the Chinese stopped their expansion to the west. It was also a point of cultural exchange: some historians believe that it was also the moment when the technology of paper manufacture found its way from China to the Western world. GUESTS Hilde de Weerdt, Professor of Chinese History at Leiden University Michael Höckelmann, British Academy Postdoctoral Fellow in the Department of History at King's College London Hugh Kennedy, Professor of Arabic at SOAS, University of London Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the life, work and reputation of Julius Caesar. Famously assassinated as he entered the Roman senate on the Ides of March, 44 BC, Caesar was an inspirational general who conquered much of Europe. He was a ruthless and canny politician who became dictator of Rome, and wrote The Gallic Wars, one of the most admired and studied works of Latin literature. Shakespeare is one of many later writers to have been fascinated by the figure of Julius Caesar. With: Christopher Pelling Regius Professor of Greek at the University of Oxford Catherine Steel Professor of Classics at the University of Glasgow Maria Wyke Professor of Latin at University College London Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Euler's number, also known as e. First discovered in the seventeenth century by the Swiss mathematician Jacob Bernoulli when he was studying compound interest, e is now recognised as one of the most important and interesting numbers in mathematics. Roughly equal to 2.718, e is useful in studying many everyday situations, from personal savings to epidemics. It also features in Euler's Identity, sometimes described as the most beautiful equation ever written. With: Colva Roney-Dougal Reader in Pure Mathematics at the University of St Andrews June Barrow-Green Senior Lecturer in the History of Maths at the Open University Vicky Neale Whitehead Lecturer at the Mathematical Institute and Balliol College at the University of Oxford Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Sun. The object that gives the Earth its light and heat is a massive ball of gas and plasma 93 million miles away. Thanks to the nuclear fusion reactions taking place at its core, the Sun has been shining for four and a half billion years. Its structure, and the processes that keep it burning, have fascinated astronomers for centuries. After the invention of the telescope it became apparent that the Sun is not a placid, steadily shining body but is subject to periodic changes in its appearance and eruptions of dramatic violence, some of which can affect us here on Earth. Recent space missions have revealed fascinating new insights into our nearest star. With: Carolin Crawford Gresham Professor of Astronomy and Fellow of Emmanuel College, Cambridge Yvonne Elsworth Poynting Professor of Physics at the University of Birmingham Louise Harra Professor of Solar Physics at UCL Mullard Space Science Laboratory Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Virginia Woolf's novel Mrs Dalloway. First published in 1925, it charts a single day in the life of Clarissa Dalloway, a prosperous member of London society, as she prepares to throw a party. Writing in her diary during the writing of the book, Woolf explained what she had set out to do: 'I want to give life and death, sanity and insanity. I want to criticize the social system, and to show it at work at its most intense.' Celebrated for its innovative narrative technique and distillation of many of the preoccupations of 1920s Britain, Mrs Dalloway is now seen as a landmark of twentieth-century fiction, and one of the finest products of literary modernism. With: Professor Dame Hermione Lee President of Wolfson College, Oxford Jane Goldman Reader in English Literature at the University of Glasgow Kathryn Simpson Senior Lecturer in English Literature at Cardiff Metropolitan University.

Melvyn Bragg and his guests discuss one of the most remarkable figures of the Middle Ages, Hildegard of Bingen. The abbess of a Benedictine convent, Hildegard experienced a series of mystical visions which she documented in her writings. She was an influential person in the religious world and much of her extensive correspondence with popes, monarchs and other important figures survives. Hildegard was also celebrated for her wide-ranging scholarship, which as well as theology covered the natural world, science and medicine. Officially recognised as a saint by the Catholic Church in 2012, Hildegard is also one of the earliest known composers. Since their rediscovery in recent decades her compositions have been widely recorded and performed. With: Miri Rubin Professor of Medieval and Early Modern History and Head of the School of History at Queen Mary, University of London William Flynn Lecturer in Medieval Latin at the Institute for Medieval Studies at the University of Leeds Almut Suerbaum Professor of Medieval German and Fellow of Somerville College, Oxford. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the philosophy of solitude. The state of being alone can arise for many different reasons: imprisonment, exile or personal choice. It can be prompted by religious belief, personal necessity or a philosophical need for solitary contemplation. Many thinkers have dealt with the subject, from Plato and Aristotle to Hannah Arendt. It's a philosophical tradition that takes in medieval religious mystics, the work of Montaigne and Adam Smith, and the great American poets of solitude Thoreau and Emerson. With: Melissa Lane Professor of Politics at Princeton University Simon Blackburn Professor of Philosophy at the New College of the Humanities and Fellow of Trinity College, Cambridge John Haldane Professor of Philosophy at the University of St Andrews Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the life and work of Robert Boyle, a pioneering scientist and a founder member of the Royal Society. Born in Ireland in 1627, Boyle was one of the first natural philosophers to conduct rigorous experiments, laid the foundations of modern chemistry and derived Boyle's Law, describing the physical properties of gases. In addition to his experimental work he left a substantial body of writings about philosophy and religion; his piety was one of the most important factors in his intellectual activities, prompting a celebrated dispute with his contemporary Thomas Hobbes. With: Simon Schaffer Professor of the History of Science at the University of Cambridge Michael Hunter Emeritus Professor of History at Birkbeck College, University of London Anna Marie Roos Senior Lecturer in the History of Science and Medicine at the University of Lincoln Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Bluestockings. Around the middle of the eighteenth century a small group of intellectual women began to meet regularly to discuss literature and other matters, inviting some of the leading thinkers of the day to take part in informal salons. In an age when women were not expected to be highly educated, the Bluestockings were sometimes regarded with suspicion or even hostility. But prominent members such as Elizabeth Montagu - known as 'the Queen of the Bluestockings', and author of an influential essay about Shakespeare - and the classicist Elizabeth Carter were highly regarded for their scholarship. Their accomplishments led to far greater acceptance of women as the intellectual equal of men, and furthered the cause of female education. With: Karen O'Brien Vice-Principal and Professor of English at King's College London Elizabeth Eger Reader in English Literature at King's College London Nicole Pohl Reader in English Literature at Oxford Brookes University Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the history and contents of the Talmud, one of the most important texts of Judaism. The Talmud was probably written down over a period of several hundred years, beginning in the 2nd century. It contains the authoritative text of the traditional Jewish oral law, and also an account of early Rabbinic discussion of, and commentary on, these laws. In later centuries scholars wrote important commentaries on these texts, which remain central to most strands of modern Judaism. With: Philip Alexander Emeritus Professor of Jewish Studies at the University of Manchester Rabbi Norman Solomon Former Lecturer at the Oxford Centre for Jewish and Hebrew Studies Laliv Clenman Lecturer in Rabbinic Literature at Leo Baeck College and a Visiting Lecturer at the Department of Theology and Religious Studies, King's College London Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Rubaiyat of Omar Khayyam. In 1859 the poet Edward FitzGerald published a long poem based on the verses of the 11th-century Persian scholar Omar Khayyam. Not a single copy was sold in the first few months after the work's publication, but after it came to the notice of members of the Pre-Raphaelite Brotherhood it became enormously influential. Although only loosely based on the original, the Rubaiyat made Khayyam the best-known Eastern poet in the English-speaking world. FitzGerald's version is itself one of the most admired works of Victorian literature, praised and imitated by many later writers. With: Charles Melville Professor of Persian History at the University of Cambridge Daniel Karlin Winterstoke Professor of English Literature at the University of Bristol Kirstie Blair Professor of English Studies at the University of Stirling Producer: Thomas Morris.

Melvyn Bragg and his guests discuss photosynthesis, the process by which green plants and many other organisms use sunlight to synthesise organic molecules. Photosynthesis arose very early in evolutionary history and has been a crucial driver of life on Earth. In addition to providing most of the food consumed by organisms on the planet, it is also responsible for maintaining atmospheric oxygen levels, and is thus almost certainly the most important chemical process ever discovered. With: Nick Lane Reader in Evolutionary Biochemistry at University College London Sandra Knapp Botanist at the Natural History Museum John Allen Professor of Biochemistry at Queen Mary, University of London. Producer: Thomas Morris

Melvyn Bragg and his guests discuss the Sino-Japanese War of 1937-45. After several years of rising tension, and the Japanese occupation of Manchuria, full-scale war between Japan and China broke out in the summer of 1937. The Japanese captured many major Chinese ports and cities, but met with fierce resistance, despite internal political divisions on the Chinese side. When the Americans entered the war following the bombing of Pearl Harbor, the Japanese found themselves fighting on several fronts simultaneously, and finally capitulated in August 1945. This notoriously brutal conflict left millions dead and had far-reaching consequences for international relations in Asia. With: Rana Mitter Professor of the History and Politics of Modern China at the University of Oxford Barak Kushner Senior Lecturer in Japanese History at the University of Cambridge Tehyun Ma Lecturer in Chinese History at the University of Exeter Producer: Thomas Morris.

Melvyn Bragg and his guests discuss The Tale of Sinuhe, one of the most celebrated works of ancient Egyptian literature. Written around four thousand years ago, the poem narrates the story of an Egyptian official who is exiled to Syria before returning to his homeland some years later. The number of versions of the poem, which is known from several surviving papyri and inscriptions, suggests that it was seen as an important literary work; although the story is set against a backdrop of real historical events, most scholars believe that the poem is a work of fiction. With: Richard Parkinson Professor of Egyptology and Fellow of Queen's College at the University of Oxford Roland Enmarch Senior Lecturer in Egyptology at the University of Liverpool. Aidan Dodson Senior Research Fellow in the Department of Archaeology and Anthropology at the University of Bristol Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Laurence Sterne's novel Tristram Shandy. Sterne's comic masterpiece is an extravagantly inventive work which was hugely popular when first published in 1759. Its often bawdy humour, and numerous digressions, are combined with bold literary experiment, such as a page printed entirely black to mark the death of one of the novel's characters. Dr Johnson wrote that "Nothing odd will do long. Tristram Shandy did not last" - but two hundred and fifty years after the book's publication, Tristram Shandy remains one of the most influential and widely admired books of the eighteenth century. With: Judith Hawley Professor of Eighteenth-Century Literature at Royal Holloway, University of London John Mullan Professor of English at University College London Mary Newbould Bowman Supervisor in English at Wolfson College, University of Cambridge. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Domesday Book, a vast survey of the land and property of much of England and Wales completed in 1086. Twenty years after the Battle of Hastings, William the Conqueror sent officials to most of his new territories to compile a list of land holdings and to gather information about settlements, the people who lived there and even their farm animals. Almost without parallel in European history, the resulting document was of immense importance for many centuries, and remains a central source for medieval historians. With: Stephen Baxter Reader in Medieval History at Kings College London Elisabeth van Houts Honorary Professor of Medieval European History at the University of Cambridge David Bates Professorial Fellow in Medieval History at the University of East Anglia Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Strabo's Geographica. Written almost exactly two thousand years ago by a Greek scholar living in Rome, the Geographica is an ambitious attempt to describe the entire world known to the Romans and Greeks at that time. Strabo seems to have based his book on accounts of distant lands given to him by contemporary travellers and imperial administrators, and on earlier works of scholarship by other Greek writers. One of the earliest systematic works of geography, Strabo's book offers a revealing insight into the state of ancient scholarship, and remained influential for many centuries after the author's death. With: Paul Cartledge AG Leventis Professor of Greek Culture at the University of Cambridge Maria Pretzler Senior Lecturer in Ancient History at Swansea University Benet Salway Senior Lecturer in Ancient History at UCL Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the science of matter and the states in which it can exist. Most people are familiar with the idea that a substance like water can exist in solid, liquid and gaseous forms. But as much as 99% of the matter in the universe is now believed to exist in a fourth state, plasma. Today scientists recognise a number of other exotic states or phases, such as glasses, gels and liquid crystals - many of them with useful properties that can be exploited. With: Andrea Sella Professor of Chemistry at University College London Athene Donald Professor of Experimental Physics at the University of Cambridge Justin Wark Professor of Physics and Fellow of Trinity College at the University of Oxford Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Max Weber's book the Protestant Ethic and the Spirit of Capitalism. Published in 1905, Weber's essay proposed that Protestantism had been a significant factor in the emergence of capitalism, making an explicit connection between religious ideas and economic systems. Weber suggested that Calvinism, with its emphasis on personal asceticism and the merits of hard work, had created an ethic which had enabled the success of capitalism in Protestant countries. Weber's essay has come in for some criticism since he published the work, but is still seen as one of the seminal texts of twentieth-century sociology. With: Peter Ghosh Fellow in History at St Anne's College, Oxford Sam Whimster Honorary Professor in Sociology at the University of New South Wales Linda Woodhead Professor of Sociology of Religion at Lancaster University. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the work of George Berkeley, an Anglican bishop who was one of the most important philosophers of the eighteenth century. Bishop Berkeley believed that objects only truly exist in the mind of somebody who perceives them - an idea he called immaterialism. His interests and writing ranged widely, from the science of optics to religion and the medicinal benefits of tar water. His work on the nature of perception was a spur to many later thinkers, including David Hume and Immanuel Kant. The clarity of Berkeley's writing, and his ability to pose a profound problem in an easily understood form, has made him one of the most admired early modern thinkers. With: Peter Millican Gilbert Ryle Fellow and Professor of Philosophy at Hertford College, Oxford Tom Stoneham Professor of Philosophy at the University of York Michela Massimi Senior Lecturer in Philosophy of Science at the University of Edinburgh. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Trinity. The idea that God is a single entity, but one known in three distinct forms - Father, Son and Holy Spirit - has been a central belief for most Christians since the earliest years of the religion. The doctrine was often controversial in the early years of the Church, until clarified by the Council of Nicaea in the late 4th century. Later thinkers including St Augustine and Thomas Aquinas recognised that this religious mystery posed profound theological questions, such as whether the three persons of the Trinity always acted together, and whether they were of equal status. The Trinity's influence on Christian thought and practice is considerable, although it is interpreted in different ways by different Christian traditions. With: Janet Soskice Professor of Philosophical Theology at the University of Cambridge and a Fellow of Jesus College Martin Palmer Director of the International Consultancy on Religion, Education, and Culture The Reverend Graham Ward Regius Professor of Divinity at the University of Oxford and a Canon of Christ Church. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the life of Spartacus, the gladiator who led a major slave rebellion against the Roman Republic in the 1st century BC. He was an accomplished military leader, and the campaign he led contributed significantly to the instability of the Roman state in this period. Spartacus was celebrated by some ancient historians and reviled by others, and became a hero to revolutionaries in 19th-century Europe. Modern perceptions of his character have been influenced by Stanley Kubrick's 1960 film - but ancient sources give a rather more complex picture of Spartacus and the aims of his rebellion. With: Mary Beard Professor of Classics at the University of Cambridge Maria Wyke Professor of Latin at University College, London Theresa Urbainczyk Associate Professor of Classics at University College, Dublin. Producer: Victoria Brignell.

Melvyn Bragg and his guests discuss the eye. Humans have been attempting to understand the workings and significance of the organ for at least 2500 years. Some ancient philosophers believed that the eye enabled creatures to see by emitting its own light. The function and structures of the eye became an area of particular interest to doctors in the Islamic Golden Age. In Renaissance Europe the work of thinkers including Kepler and Descartes revolutionised thinking about how the organ worked, but it took several hundred years for the eye to be thoroughly understood. Eyes have long attracted more than purely scientific interest, known even today as the 'windows on the soul'. With: Patricia Fara Senior Tutor of Clare College, University of Cambridge William Ayliffe Gresham Professor of Physic at Gresham College Robert Iliffe Professor of Intellectual History and History of Science at the University of Sussex Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Social Darwinism. After the publication of Charles Darwin's masterpiece On the Origin of Species in 1859, some thinkers argued that Darwin's ideas about evolution could also be applied to human society. One thinker particularly associated with this movement was Darwin's near-contemporary Herbert Spencer, who coined the phrase 'survival of the fittest'. He argued that competition among humans was beneficial, because it ensured that only the healthiest and most intelligent individuals would succeed. Social Darwinism remained influential for several generations, although its association with eugenics and later adoption as an ideological position by Fascist regimes ensured its eventual downfall from intellectual respectability. With: Adam Kuper Centennial Professor of Anthropology at the LSE, University of London Gregory Radick Professor of History and Philosophy of Science at the University of Leeds Charlotte Sleigh Reader in the History of Science at the University of Kent. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss chivalry, the moral code observed by knights of the Middle Ages. Chivalry originated in the military practices of aristocratic French and German soldiers, but developed into an elaborate system governing many different aspects of knightly behaviour. It influenced the conduct of medieval military campaigns and also had important religious and literary dimensions. It gave rise to the phenomenon of courtly love, the subject of much romance literature, as well as to the practice of heraldry. The remnants of the chivalric tradition linger in European culture even today. Miri Rubin Professor of Medieval and Early Modern History and Head of the School of History at Queen Mary, University of London Matthew Strickland Professor of Medieval History at the University of Glasgow Laura Ashe Associate Professor in English at the University of Oxford and Fellow of Worcester College Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Phoenicians. The Greek historian Herodotus wrote about a people from the Levant who were accomplished sailors and traders, and who taught the Greeks their alphabet. He called them the Phoenicians, the Greek word for purple, although it is not known what they called themselves. By about 700 BC they were trading all over the Mediterranean, taking Egyptian and Syrian goods as far as Spain and North Africa. Although they were hugely influential in the ancient world, they left few records of their own; some contemporary scholars believe that the Phoenicians were never a unified civilisation but a loose association of neighbouring city-states. With: Mark Woolmer Assistant Principal at Collingwood College, Durham University Josephine Quinn Lecturer in Ancient History at the University of Oxford Cyprian Broodbank Professor of Mediterranean Archaeology at University College London Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Catastrophism, the idea that natural disasters have had a significant influence in moulding the Earth's geological features. In 1822 William Buckland, the first reader of Geology at the University of Oxford, published his famous Reliquae Diluvianae, in which he ascribed most of the fossil record to the effects of Noah's flood. Charles Lyell in his Principles of Geology challenged these writings, arguing that geological change was slow and gradual, and that the processes responsible could still be seen at work today - a school of thought known as Uniformitarianism. But in the 1970s the idea that natural catastrophes were a major factor in the Earth's geology was revived and given new respectability by the discovery of evidence of a gigantic asteroid impact 65 million years ago, believed by many to have resulted in the extinction of the dinosaurs. With: Andrew Scott Leverhulme Emeritus Fellow in the Department of Earth Sciences at Royal Holloway, University of London Jan Zalasiewicz Senior Lecturer in Geology at the University of Leicester Leucha Veneer Visiting Scholar at the Faculty of Life Sciences at the University of Manchester Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the sources for early Chinese history. The first attempts to make a record of historical events in China date from the Shang dynasty of the second millennium BC. The earliest surviving records were inscribed on bones or tortoise shells; in later centuries, chroniclers left detailed accounts on paper or silk. In the last hundred years, archaeologists have discovered a wealth of new materials, including a cache of previously unknown texts which were found in a sealed cave on the edge of the Gobi Desert. Such sources are are shedding new light on Chinese history, although interpreting ancient sources from the period before the invention of printing presents a number of challenges. With: Roel Sterckx Joseph Needham Professor of Chinese History at the University of Cambridge Tim Barrett Professor of East Asian History at SOAS, University of London Hilde de Weerdt Professor of Chinese History at Leiden University Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Battle of Tours. In 732 a large Arab army invaded Gaul from northern Spain, and travelled as far north as Poitiers. There they were defeated by Charles Martel, whose Frankish and Burgundian forces repelled the invaders. The result confirmed the regional supremacy of Charles, who went on to establish a strong Frankish dynasty. The Battle of Tours was the last major incursion of Muslim armies into northern Europe; some historians, including Edward Gibbon, have seen it as the decisive moment that determined that the continent would remain Christian. With: Hugh Kennedy Professor of Arabic at SOAS, University of London Rosamond McKitterick Professor of Medieval History at the University of Cambridge Matthew Innes Vice-Master and Professor of History at Birkbeck, University of London.

Melvyn Bragg and his guests discuss Plato's Symposium, one of the Greek philosopher's most celebrated works. Written in the 4th century BC, it is a dialogue set at a dinner party attended by a number of prominent ancient Athenians, including the philosopher Socrates and the playwright Aristophanes. Each of the guests speaks of Eros, or erotic love. This fictional discussion of the nature of love, how and why it arises and what it means to be in love, has had a significant influence on later thinkers, and is the origin of the modern notion of Platonic love. With: Angie Hobbs Professor of the Public Understanding of Philosophy at the University of Sheffield Richard Hunter Regius Professor of Greek at the University of Cambridge Frisbee Sheffield Director of Studies in Philosophy at Christ's College, University of Cambridge. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Medici family, who dominated Florence's political and cultural life for three centuries. The House of Medici came to prominence in Italy in the fifteenth century as a result of the wealth they had built up through banking. With the rise of Cosimo de' Medici, they became Florence's most powerful and influential dynasty, effectively controlling the city's government. Their patronage of the arts turned Florence into a leading centre of the Renaissance and the Medici Bank was one of the most successful institutions of its day. As well as producing four popes, members of the House of Medici married into various European royal families. With: Evelyn Welch Professor of Renaissance Studies at King's College, University of London Robert Black Professor of Renaissance History at the University of Leeds Catherine Fletcher Lecturer in Public History at the University of Sheffield Producer: Victoria Brignell.

Melvyn Bragg and his guests discuss complexity and how it can help us understand the world around us. When living beings come together and act in a group, they do so in complicated and unpredictable ways: societies often behave very differently from the individuals within them. Complexity was a phenomenon little understood a generation ago, but research into complex systems now has important applications in many different fields, from biology to political science. Today it is being used to explain how birds flock, to predict traffic flow in cities and to study the spread of diseases. With: Ian Stewart Emeritus Professor of Mathematics at the University of Warwick Jeff Johnson Professor of Complexity Science and Design at the Open University Professor Eve Mitleton-Kelly Director of the Complexity Research Group at the London School of Economics. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the life and work of Pliny the Younger, famous for his letters. A prominent lawyer in Rome in the first century AD, Pliny later became governor of the province of Bithynia, on the Black Sea coast of modern Turkey. Throughout his career he was a prolific letter-writer, sharing his thoughts with great contemporaries including the historian Tacitus, and asking the advice of the Emperor Trajan. Pliny's letters offer fascinating insights into life in ancient Rome and its empire, from the mundane details of irrigation schemes to his vivid eyewitness account of the eruption of Vesuvius. With: Catharine Edwards Professor of Classics and Ancient History at Birkbeck, University of London Roy Gibson Professor of Latin at the University of Manchester Alice König Lecturer in Latin and Classical Studies at the University of St Andrews Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Hindu ideas about Creation. According to most Western religious traditions, a deity was the original creator of the Universe. Hinduism, on the other hand, has no single creation story. For thousands of years, Hindu thinkers have taken a variety of approaches to the question of where we come from, with some making the case for divine intervention and others asking whether it is even possible for humans to comprehend the nature of creation. The origin of our existence, and the nature of the Universe we live in, is one of the richest strands of Hindu thought. With: Jessica Frazier Lecturer in Religious Studies at the University of Kent and a Research Fellow of the Oxford Centre for Hindu Studies at the University of Oxford Chakravarthi Ram-Prasad Professor of Comparative Religion and Philosophy at Lancaster University Gavin Flood Professor of Hindu Studies and Comparative Religion at the University of Oxford. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the development of the microscope, an instrument which has revolutionised our knowledge of the world and the organisms that inhabit it. In the seventeenth century the pioneering work of two scientists, the Dutchman Antonie van Leeuwenhoek and Robert Hooke in England, revealed the teeming microscopic world that exists at scales beyond the capabilities of the naked eye. The microscope became an essential component of scientific enquiry by the nineteenth century, but in the 1930s a German physicist, Ernst Ruska, discovered that by using a beam of electrons he could view structures much tinier than was possible using visible light. Today light and electron microscopy are among the most powerful tools at the disposal of modern science, and new techniques are still being developed. With: Jim Bennett Visiting Keeper at the Science Museum in London Sir Colin Humphreys Professor of Materials Science and Director of Research at the University of Cambridge Michelle Peckham Professor of Cell Biology at the University of Leeds Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the life of Pocahontas, the Native American woman who to English eyes became a symbol of the New World. During the colonisation of Virginia in the first years of the seventeenth century, Pocahontas famously saved the life of an English prisoner, John Smith. Later captured, she converted to Christianity, married a settler and travelled to England where she was regarded as a curiosity. She died in 1617 at the age of 22 and was buried in Gravesend; her story has fascinated generations on both sides of the Atlantic, and has been reinterpreted and retold by many writers and artists. With: Susan Castillo Harriet Beecher Stowe Emeritus Professor of American Studies at King's College London Tim Lockley Reader in American Studies at the University of Warwick Jacqueline Fear-Segal Reader in American History and Culture at the University of East Anglia Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Shakespeare's play The Tempest. Written in around 1610, it is thought to be one of the playwright's final works and contains some of the most poetic and memorable passages in all his output. It was influenced by accounts of distant lands written by contemporary explorers, and by the complex international politics of the early Jacobean age. The Tempest is set entirely on an unnamed island inhabited by the magician Prospero, his daughter Miranda and the monstrous Caliban, one of the most intriguing characters in Shakespeare's output. Its themes include magic and the nature of theatre itself - and some modern critics have seen it as an early meditation on the ethics of colonialism. With: Jonathan Bate Provost of Worcester College, Oxford Erin Sullivan Lecturer and Fellow at the Shakespeare Institute, University of Birmingham Katherine Duncan-Jones Emeritus Fellow of Somerville College, Oxford Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Ordinary Language Philosophy, a school of thought which emerged in Oxford in the years following World War II. With its roots in the work of Ludwig Wittgenstein, Ordinary Language Philosophy is concerned with the meanings of words as used in everyday speech. Its adherents believed that many philosophical problems were created by the misuse of words, and that if such 'ordinary language' were correctly analysed, such problems would disappear. Philosophers associated with the school include some of the most distinguished British thinkers of the twentieth century, such as Gilbert Ryle and JL Austin. With: Stephen Mulhall Professor of Philosophy at New College, Oxford Ray Monk Professor of Philosophy at the University of Southampton Julia Tanney Reader in Philosophy of Mind at the University of Kent Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Berlin Conference of 1884. In the 1880s, as colonial powers attempted to increase their spheres of influence in Africa, tensions began to grow between European nations including Britain, Belgium and France. In 1884 the German Chancellor, Otto von Bismarck, brought together many of Europe's leading statesmen to discuss trade and colonial activities in Africa. Although the original purpose of the summit was to settle the question of territorial rights in West Africa, negotiations eventually dealt with the entire continent. The conference was part of the process known as the Scramble for Africa, and the decisions reached at it had effects which have lasted to the present day. The conference is commonly seen as one of the most significant events of the so-called Scramble for Africa; in the following decades, European nations laid claim to most of the continent. With: Richard Drayton Rhodes Professor of Imperial History at King's College London Richard Rathbone Emeritus Professor of African History at SOAS, University of London Joanna Lewis Assistant Professor of Imperial History at the LSE, University of London. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Corn Laws. In 1815 the British Government passed legislation which artificially inflated the price of corn. The measure was supported by landowners but strongly opposed by manufacturers and the urban working class. In the 1830s the Anti-Corn Law League was founded to campaign for their repeal, led by the Radical Richard Cobden. The Conservative government of Sir Robert Peel finally repealed the laws in 1846, splitting his party in the process, and the resulting debate had profound consequences for the political and economic future of the country. With: Lawrence Goldman Fellow in Modern History at St Peter's College, Oxford Boyd Hilton Former Professor of Modern British History at the University of Cambridge and Fellow of Trinity College Cheryl Schonhardt-Bailey Reader in Political Science at the London School of Economics Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Book of Common Prayer. In 1549, at the height of the English Reformation, a new prayer book was published containing versions of the liturgy in English. Generally believed to have been supervised by Thomas Cranmer, the Book of Common Prayer was at the centre of the decade of religious turmoil that followed, and disputes over its use were one of the major causes of the English Civil War in the 1640s. The book was revised several times before the celebrated final version was published in 1662. It is still in use in many churches today, and remains not just a liturgical text of great importance but a literary work of profound beauty and influence. With: Diarmaid MacCulloch Professor of the History of the Church at the University of Oxford Alexandra Walsham Professor of Modern History at the University of Cambridge Martin Palmer Director of the International Consultancy on Religion, Education, and Culture Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Roman physician and medical theorist Galen. The most celebrated doctor in the ancient world, Galen was Greek by birth but spent most of his career in Rome, where he was personal physician to three Emperors. He was one of the most prolific authors of his age, and a sixth of all surviving ancient literature in Greek was written by him. Celebrated in his own lifetime, he was regarded as the preeminent medical authority for centuries after his death, both in the Arab world and in medieval Europe. It was only the discoveries of Renaissance science which removed Galen from his dominant position in the pantheon of medicine. With: Vivian Nutton Emeritus Professor of the History of Medicine at University College London Helen King Professor of Classical Studies at the Open University Caroline Petit Wellcome Trust Senior Research Fellow in Classics at the University of Warwick Producer: Thomas Morris.

Melvyn Bragg and his guests discuss exoplanets. Astronomers have speculated about the existence of planets beyond our solar system for centuries. Although strenuous efforts were made to find such planets orbiting distant stars, it was not until the 1990s that instruments became sophisticated enough to detect such remote objects. In 1992 Dale Frail and Aleksander Wolszczan discovered the first confirmed exoplanets: two planets orbiting the pulsar PSR B1257+12. Since then, astronomers have discovered more than 900 exoplanets, and are able to reach increasingly sophisticated conclusions about what they look like - and whether they might be able to support life. Recent data from experiments such as NASA's space telescope Kepler indicates that such planets may be far more common than previously suspected. With: Carolin Crawford Gresham Professor of Astronomy and a member of the Institute of Astronomy at the University of Cambridge Don Pollacco Professor of Astronomy at the University of Warwick Suzanne Aigrain Lecturer in Astrophysics at the University of Oxford and a Fellow of All Souls College. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Mamluks, who ruled Egypt and Syria from about 1250 to 1517. Originally slave soldiers who managed to depose their masters, they went on to repel the Mongols and the Crusaders to become the dominant force in the medieval Islamic Middle Eastern world. Although the Mamluks were renowned as warriors, under their rule art, crafts and architecture blossomed. Little known by many in the West today, the Mamluks remained in power for almost 300 years until they were eventually overthrown by the Ottomans. With: Amira Bennison Reader in the History and Culture of the Maghrib at the University of Cambridge and Fellow of Magdalene College Robert Irwin Former Senior Research Associate in the Department of History at SOAS, University of London Doris Behrens-Abouseif Nasser D Khalili Professor of Islamic Art and Archaeology at SOAS, University of London Producer: Victoria Brignell.

Melvyn Bragg and his guests begin a new series of the programme with a discussion of the French polymath Blaise Pascal. Born in 1623, Pascal was a brilliant mathematician and scientist, inventing one of the first mechanical calculators and making important discoveries about fluids and vacuums while still a young man. In his thirties he experienced a religious conversion, after which he devoted most of his attention to philosophy and theology. Although he died in his late thirties, Pascal left a formidable legacy as a scientist and pioneer of probability theory, and as one of seventeenth century Europe's greatest writers. With: David Wootton Anniversary Professor of History at the University of York Michael Moriarty Drapers Professor of French at the University of Cambridge Michela Massimi Senior Lecturer in the Philosophy of Science at the University of Edinburgh. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the invention of radio. In the early 1860s the Scottish physicist James Clerk Maxwell derived four equations which together describe the behaviour of electricity and magnetism. They predicted the existence of a previously unknown phenomenon: electromagnetic waves. These waves were first observed in the early 1880s, and over the next two decades a succession of scientists and engineers built increasingly elaborate devices to produce and detect them. Eventually this gave birth to a new technology: radio. The Italian Guglielmo Marconi is commonly described as the father of radio - but many other figures were involved in its development, and it was not him but a Canadian, Reginald Fessenden, who first succeeded in transmitting speech over the airwaves. With: Simon Schaffer Professor of the History of Science at the University of Cambridge Elizabeth Bruton Postdoctoral Researcher at the University of Leeds John Liffen Curator of Communications at the Science Museum, London Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Romance of the Three Kingdoms, widely regarded as one of the greatest works of Chinese literature. Written 600 years ago, it is an historical novel that tells the story of a tumultuous period in Chinese history, the 2nd and 3rd centuries AD. Partly historical and partly legend, it recounts the fighting and scheming of the feudal lords and the three states which came to power as the Han Dynasty collapsed. The influence of Romance of the Three Kingdoms in East Asia has been likened to that of Homer in the West, and this warfare epic remains popular in China today. With: Frances Wood Former Lead Curator of Chinese Collections at the British Library Craig Clunas Professor of the History of Art at the University of Oxford Margaret Hillenbrand University Lecturer in Modern Chinese Literature at the University of Oxford and Fellow of Wadham College Producer: Victoria Brignell.

Melvyn Bragg and his guests discuss the Physiocrats, an important group of economic thinkers in eighteenth-century France. The Physiocrats believed that the land was the ultimate source of all wealth, and crucially that markets should not be constrained by governments. Their ideas were important not just to economists but to the course of politics in France. Later they influenced the work of Adam Smith, who called Physiocracy "perhaps the nearest approximation to the truth that has yet been published upon the subject of political economy." With: Richard Whatmore Professor of Intellectual History & the History of Political Thought at the University of Sussex Joel Felix Professor of History at the University of Reading Helen Paul Lecturer in Economics and Economic History at the University of Southampton. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the meaning and significance of prophecy in the Abrahamic religions. Prophets, those with the ability to convey divinely-inspired revelation, are significant figures in the Hebrew Bible and later became important not just to Judaism but also to Christianity and Islam. Although these three religions share many of the same prophets, their interpretation of the nature of prophecy often differs. With: Mona Siddiqui Professor of Islamic and Interreligious Studies at the University of Edinburgh Justin Meggitt University Senior Lecturer in the Study of Religion and the Origins of Christianity at the University of Cambridge Jonathan Stökl Post-Doctoral Researcher at Leiden University. Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Einstein's theories of relativity. Between 1905 and 1917 Albert Einstein formulated a theoretical framework which transformed our understanding of the Universe. The twin theories of Special and General Relativity offered insights into the nature of space, time and gravitation which changed the face of modern science. Relativity resolved apparent contradictions in physics and also predicted several new phenomena, including black holes. It's regarded today as one of the greatest intellectual achievements of the twentieth century, and had an impact far beyond the world of science. With: Ruth Gregory Professor of Mathematics and Physics at Durham University Martin Rees Astronomer Royal and Emeritus Professor of Cosmology and Astrophysics at the University of Cambridge Roger Penrose Emeritus Rouse Ball Professor of Mathematics at the University of Oxford. Producer: Thomas Morris.