The KT Boundary
In Our Time23 Jun 2005

The KT Boundary

Melvyn Bragg and guests discuss the KT Boundary. Across the entire planet, where it hasn't been eroded or destroyed in land movements, there is a thin grey line. In Italy it is 1 cm thick, in America it stretches to three centimetres, but it is all the same thin grey line laid into the rock some 65 million years ago and it bears witness to a cataclysmic event experienced only once in Earth's history. It is called the KT Boundary and geologists believe it is the clue to the death of the dinosaurs and the ultimate reason why mammals and humans inherited the Earth.But exactly what did happen 65 million years ago? How was this extraordinary line created across the Earth and does it really hold the key to the death of the dinosaurs?With Simon Kelley, Head of Department in the Department of Earth Sciences, Open University, Jane Francis, Professor of Palaeoclimatology, University of Leeds; Mike Benton, Professor of Vertebrate Palaeontology in the Department of Earth Sciences, University of Bristol.

Episoder(1077)

The Boxer Rebellion

The Boxer Rebellion

In the hot summer of 1900, Peking, the capital of China, was under heavy siege. But the surrounding forces were not foreign, they were Chinese. This was the Boxer Rebellion, the moment when the 'Society of Righteous and Harmonious Fists', known as the boxers, purged China of foreign merchants and missionaries. The Boxers had came out of the northern provinces, they claimed their fists were stronger than fire and they were invincible to bullets. But they were also desperate and starving and they blamed foreigners for their plight. In the end, the Boxer rebellion failed but it changed China and, more than a hundred years later, the spirit of the Boxer Rebellion lives on. They may have lost their battles but they may have won their war.

19 Mar 200942min

The Library of Alexandria

The Library of Alexandria

Melvyn Bragg and guests discuss the Library at Alexandria. Founded by King Ptolemy in the 3rd century BC the library was the first attempt to collect all the knowledge of the ancient world in one place. Scholars including Archimedes and Euclid came to study its grand array of papyri. the legacy of the library is with us today, not just in the ideas it stored and the ideas it seeded but also in the way it organised knowledge and the tools developed for dealing with it. It still influences the things we know and the way we know them to this day.With Simon Goldhill, Professor of Greek at the University of Cambridge; Matthew Nicholls, Lecturer in Classics at the University of Reading; Serafina Cuomo, Reader in Roman History at Birkbeck College, University of London.

12 Mar 200942min

The Measurement Problem in Physics

The Measurement Problem in Physics

Melvyn Bragg and guests discuss one of the deepest problems in contemporary physics. It’s called the measurement problem and it emerged from the flurry of activity in the early 20th century that gave rise to Quantum Mechanics. If the most famous fruit in physics is an apple, the most famous animal in physics is a cat. Schrödinger’s cat is named after Edwin Schrödinger, a theoretical physicist who in the early 20th century helped to develop the radical theories of Quantum Mechanics. The cat does not actually exist – it is the subject of a thought experiment – in which the rules of quantum mechanics make it appear both dead and alive at the same time.The problem of a cat that is both dead and alive illustrates the challenges of quantum physics and at the heart of this apparent absurdity is a thing called the measurement problem.The measurement problem arises because we don’t really understand how the atoms that constitute our world behave. They are fundamentally mysterious to us, even shocking, and they defy our attempts to measure and make sense of them. Possible solutions range from the existence of multiple realities to the rather more mundane possibility of an error in our mathematics - but a solution, if found, could transform our understanding of reality. With Basil Hiley, Emeritus Professor of Physics at Birkbeck, University of London, Simon Saunders, Reader in Philosophy of Physics and University Lecturer in Philosophy of Science at the University of Oxford; Roger Penrose, Emeritus Rouse Ball Professor of Mathematics at the University of Oxford

5 Mar 200942min

The Waste Land and Modernity

The Waste Land and Modernity

Melvyn Bragg and guests, including Steve Connor and Lawrence Rainey, discuss TS Eliot's seminal poem The Waste Land and its ambivalence to the modern world of technology, democracy and capitalism that was being forged around it.

26 Feb 200942min

The Observatory at Jaipur

The Observatory at Jaipur

Melvyn Bragg and guests discuss the Observatory in Jaipur with its vast and beautiful instruments built to make astronomical measurements of the stars. Commissioned in the early 18th century by the Rajput prince and child prodigy, Jai Singh, it was at the centre of attempts to marry hundreds of years of Indian and Persian astronomical tradition. The Observatory was also at the very centre of the city which was laid out according to astrological principles. Jai Singh’s observatory was the cutting edge of Indian astronomy but also a repository for aeons of Hindu and Islamic intellectual life. The instruments were extraordinarily accurate for the time but used no lenses and were built of masonry, not metal. They helped to develop astrological tables, immensely important in Hindu Society, and come down to us as a record of Indian astronomy on the cusp of colonialism. With Chandrika Kaul, Lecturer in Modern History at the University of St Andrews; David Arnold, Professor of Asian and Global History at the University of Warwick; Chris Minkowski, Professor in Sanskrit at the University of Oxford

19 Feb 200942min

Carthage's Destruction

Carthage's Destruction

Melvyn Bragg and guests discuss the Destruction of Carthage. The North African city of Carthage was rich and powerful, but in the second century BC it suffered a terrible fate. The Greek historian Appian wrote about it: “Then came new scenes of horror. As the fire spread and carried everything down, the soldiers did not wait to destroy the buildings little by little, but all in a heap. So the crashing grew louder, and many corpses fell with the stones into the midst. Others were seen still living, especially old men, women, and young children who had hidden in the inmost nooks of the houses, some of them wounded, some more or less burned, and uttering piteous cries.”When the Romans finally conquered their great enemy in 146 BC, they razed it to the ground, sold off its library and tried to destroy not merely the city but the civilisation based upon it. Carthage was removed from history with such effect that it’s hard to know the city save through Roman eyes.It was a pivotal moment in world history that left Rome as the supreme power in the Mediterranean but after it was gone the ghosts of Carthage haunted Rome and seemed to hint at Rome’s own fate. With Mary Beard, Professor of Classics at the University of Cambridge; Jo Quinn, Lecturer in Ancient History at the University of Oxford and Ellen O’Gorman, Senior Lecturer in Classics at the University of Bristol

12 Feb 200942min

The Brothers Grimm

The Brothers Grimm

Melvyn Bragg discusses the fairy tales of the Brothers Grimm with Juliette Wood, Marina Warner and Tony Phelan. The German siblings who in 1812 published a collection of fairy tales including Rapunzel, Hansel and Gretel, Cinderella and Rumpelstiltskin. But the Grimm versions are surprisingly, sometimes shockingly, different. Cinderella has no fairy godmother, her ugly sisters are not ugly but they do have their eyes pecked out by pigeons. Sleeping Beauty does not have an evil stepmother, Rapunzel is pregnant and Frog Princes do not get kissed but thrown against walls. They may not be the fairy tales as we know them, but without the Brothers Grimm we might not know them at all. But why did two respectable German linguists go chasing after fairy stories, what do the stories tell us about German culture and romantic nationalism at the time and why do these ever-evolving tales of horror, wonder and fantasy continue to hold us in thrall?With Juliette Wood, Associate Lecturer in Folklore at Cardiff University; Marina Warner, Professor in the Department of Literature, Film and Theatre Studies at the University of Essex; Tony Phelan, Professor in German at Keble College, Oxford.

5 Feb 200942min

Swift's A Modest Proposal

Swift's A Modest Proposal

Melvyn Bragg and guests discuss one of the most brilliant and shocking satires ever written in English – Jonathan Swift’s A Modest Proposal. Masquerading as an attempt to end poverty in Ireland once and for all, a Modest Proposal is a short pamphlet that draws the reader into a scheme for economic and industrial horror. Published anonymously but written by Jonathan Swift, A Modest Proposal lays bare the cruel presumptions, unchecked prejudice, the politics and the poverty of the 18th century, but it also reveals, perhaps more than anything else, the character and the mind of Swift himself.With John Mullan, Professor of English at University College London; Judith Hawley, Professor of 18th Century Literature at Royal Holloway, University of London and Ian McBride, Senior Lecturer in the History Department at King’s College London.

29 Jan 200942min

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