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)

Cultural Imperialism

Cultural Imperialism

Melvyn Bragg and guests discuss how a dominant power can exert a cultural influence on its empire. An empire rests on many things: powerful armies, good administration and strong leadership, but perha...

27 Jun 200227min

Wagner

Wagner

Melvyn Bragg and guests discuss Richard Wagner who, perhaps more than any other composer, would seem to capture the greatest triumphs and most terrifying excesses of the German spirit. He lived as mod...

20 Jun 200228min

The American West

The American West

Melvyn Bragg and guests discuss the myths and harsh reality of the 19th century American pioneers. In 1845 the editor of The New York Morning News wrote that it was the "manifest destiny" of the Unite...

13 Jun 200227min

The Soul

The Soul

Melvyn Bragg and guests discuss the Soul. In his poem ‘Sailing to Byzantium’ WB Yeats wrote:An aged man is but a paltry thing, A tattered coat upon a stick, unlessSoul clap its hands and sing, and lou...

6 Jun 200228min

The Grand Tour

The Grand Tour

Melvyn Bragg and guests discuss the origins and cultural impact of 18th century tourism. Samuel Johnson observed in 1776 that "A man who has not been in Italy, is always conscious of an inferiority, f...

30 Mai 200228min

Drugs

Drugs

Melvyn Bragg and guests discuss the history of drugs. Throughout history people have taken them to alter their perceptions and change their moods. The attractions lie in the promise of instant pleasur...

23 Mai 200228min

Chaos Theory

Chaos Theory

Melvyn Bragg examines whether world is a fundamentally chaotic or orderly place. When Newton published his Principia Mathematica in 1687 his work was founded on one simple message: Nature has laws and...

16 Mai 200242min

The Examined Life

The Examined Life

Melvyn Bragg and guests discuss self-examination. Socrates, the Greek philosopher of the 4th century BC, famously declared that "The unexamined life is not worth living." His drive towards rigorous se...

9 Mai 200242min

Populært innen Historie

henrettelsespodden
rss-dette-ma-aldri-skje-igjen
rss-katastrofe
rss-historiske-romanser
historier-som-endret-norge
rss-benadet
historier-som-endret-verden
aftenposten-historie
rss-frontkjemperne
sektledere
rss-gamle-greier
rss-nadelose-nordmenn-gestapo
med-egne-oyne
rss-strid-de-norske-borgerkrigene
taakeprat
historiepodden-ww2
undersattene
sannhet-eller-konspirasjon
vare-historier
historiepodden