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 1951WithEmma Smith Professor of Shakespeare Studies at Hertford College, University of OxfordGordon McMullan Professor of English at King’s College London and Director of the London Shakespeare CentreAnd Katherine Lewis Senior Lecturer in Medieval History at the University of HuddersfieldProducer: 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, OxfordBridget Bennett Professor of American Literature and Culture at the University of LeedsAndLaura Rattray Reader in North American Literature at the University of GlasgowProducer: 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ethics and the relationship between Christianity and humanism spread more widely from the 1960s with the discovery of unpublished works, including those written in prison as he awaited execution.With Stephen Plant Dean and Runcie Fellow at Trinity Hall at the University of CambridgeEleanor McLaughlin Lecturer in Theology and Ethics at the University of Winchester and Lecturer in Ethics at Regent’s Park College at the University of OxfordAnd Tom Greggs Marischal Chair of Divinity at the University of AberdeenProducer: Simon Tillotson

Exploring the history of automata from ancient times to modern science fiction, the podcast discusses the fear of machines becoming our masters, the spread of Greek knowledge into the Arabic civilization, advancements in automata during the medieval period, the boundary between life and death, the connection between automata and Freud's idea of the unconscious, and remarkable advancements in self-moving engineering.

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 LondonBarbara Graziosi Professor of Classics at Princeton UniversityAnd Paul Cartledge A.G. Leventis Senior Research Fellow and Emeritus Professor of Greek Culture at Clare College, CambridgeProducer: 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 ManchesterMarcus Waithe University Senior Lecturer in English Literature at the University of Cambridge and Fellow of Magdalene CollegeAndJane Thomas Professor of Victorian and Early 20th Century Literature at the University of HullProducer: Simon Tillotson.

Discussion on the Mexican-American War and its impacts: loss of territory, Native American consequences, slavery implications, Mexican instability and civil war, manifest destiny and acquisition of Mexican territories, resistance and religious divide, Comanche tribe decline, diseases and genocide on native peoples, nation-building crisis, Monroe Doctrine's perception.

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 LondonGareth Jones Professor of Biological Sciences at the University of BristolAndDean Waters Lecturer in the Environment Department at the University of YorkProducer: 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 LondonRachel Hammersley Senior Lecturer in Intellectual History at Newcastle UniversityAndRichard Whatmore Professor of Modern History at the University of St Andrews and Director of the St Andrews Institute of Intellectual HistoryProducer: 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 UniversityVesta Sarkhosh Curtis Curator of Middle Eastern Coins at the British MuseumAndLindsay Allen Lecturer in Greek and Near Eastern History at King's College LondonProducer: Simon Tillotson.