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(1078)

Hobbes

Hobbes

Melvyn Bragg and guests discuss the great 17th century political philosopher Thomas Hobbes who argued: "During the time men live without a common power to keep them all in awe, they are in that condit...

1 Des 200528min

The Graviton

The Graviton

Melvyn Bragg and guests discuss the search for the Graviton particle. Albert Einstein said "I know why there are so many people who love chopping wood. In this activity one immediately sees the result...

24 Nov 200541min

Pragmatism

Pragmatism

Melvyn Bragg and guests discuss the American philosophy of pragmatism. A pragmatist "turns away from abstraction and insufficiency, from verbal solutions, from bad apriori reasons, from fixed principl...

17 Nov 200542min

Greyfriars and Blackfriars

Greyfriars and Blackfriars

Melvyn Bragg and guests discuss the religious orders of the Dominicans and the Franciscans, known as the Blackfriars and Greyfriars. "Just as it is better to light up others than to shine alone, it is...

10 Nov 200542min

Asteroids

Asteroids

Melvyn Bragg and guests discuss the unique properties of asteroids. They used to be regarded as the 'vermin of the solar system', irritating rubble that got in the way of astronomers trying to study m...

3 Nov 200528min

Johnson

Johnson

Melvyn Bragg and guests discuss Samuel Johnson, a giant of 18th century literature. “There is no arguing with Johnson, for when his pistol misses fire, he knocks you down with the butt of it." The poe...

27 Okt 200528min

Cynicism

Cynicism

Melvyn Bragg and guests discuss the Cynics, the performance artists of philosophy. Eating live octopus with fresh lupins, performing intimate acts in public places and shouting at passers by from ins...

20 Okt 200528min

Mammals

Mammals

Melvyn Bragg and guests discuss the rise of the mammals. The Cenozoic Era of Earth's history began 65 million years ago and runs to this day. It began with the extraordinary 'KT event', a supposed ast...

13 Okt 200541min

Populært innen Historie

rss-dette-ma-aldri-skje-igjen
henrettelsespodden
rss-historiske-romanser
rss-benadet
historier-som-endret-norge
rss-katastrofe
rss-nadelose-nordmenn-gestapo
aftenposten-historie
sektledere
historier-som-endret-verden
med-egne-oyne
rss-strid-de-norske-borgerkrigene
historiepodden
rss-frontkjemperne
rss-gamle-greier
taakeprat
sannhet-eller-konspirasjon
vare-historier
undersattene
nordnorsk-historie