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In Our Time
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The big ideas which form the intellectual agenda of our age are illuminated by some of the best minds. Melvyn Bragg and three guests investigate the history of ideas and debate their application in modern life. |
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BIOGRAPHY
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| "I'm fascinated by the fact that we live in a time when so many people are doing fantastic work, and thinking in areas which it's not remotely possible for me to keep up with & and these people are prepared to talk about it. They're prepared to come on In Our Time and other programmes on Radio 4 and try and talk to the rest of us ..." |
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THE KT BOUNDARY
Read audience reactions to this edition of In Our Time.
Use our research page to find out more about this subject.
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?
Contributors
Simon Kelley, Head of Department in the Department of Earth Sciences at the Open University
Jane Francis, Professor of Palaeoclimatology at the University of Leeds
Mike Benton, Professor of Vertebrate Palaeontology in the Department of Earth Sciences at the University of Bristol
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