The KT Boundary
In Our Time23 Juni 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.

Avsnitt(1078)

Lamarck and Natural Selection

Lamarck and Natural Selection

Melvyn Bragg discusses Jean-Baptiste Lamarck, the 18th century French scientist.Charles Darwin defined Natural Selection in On the Origin of Species, “Variations, however slight and from whatever caus...

24 Dec 200357min

The Alphabet

The Alphabet

Melvyn Bragg and guests discuss the feat of astonishing intellectual engineering which provides us with millions of words in hundreds of languages. At the start of the twentieth century, in the depths...

18 Dec 200342min

The Devil

The Devil

Melvyn Bragg and guests discuss the history of the Devil. In the Gospel according to John he is ‘a murderer from the beginning’, ‘a liar and the father of lies’, and Dante calls him ‘the ill Worm that...

11 Dec 200328min

Wittgenstein

Wittgenstein

Melvyn Bragg and guests discuss the life, work and legacy of Ludwig Wittgenstein. There is little doubt that he was a towering figure of the twentieth century; on his return to Cambridge in 1929 Mayna...

4 Dec 200342min

St Bartholomew's Day Massacre

St Bartholomew's Day Massacre

Melvyn Bragg and guests discuss the infamous St Bartholomew’s Day Massacre. In Paris, in the high summer of 1572, a very unusual wedding was happening in the cathedral of Notre Dame. Henri, the young ...

27 Nov 200328min

Ageing the Earth

Ageing the Earth

Melvyn Bragg and guests discuss the age of the Earth. It was once thought that the world began in 4004 BC. Lord Kelvin calculated the cooling temperature of a rock the size of our planet and came up w...

20 Nov 200328min

Duty

Duty

Melvyn Bragg and guests discuss the concept of duty. George Bernard Shaw wrote in his play Caesar and Cleopatra, “When a stupid man is doing something he is ashamed of, he always declares that it is h...

13 Nov 200328min

Sensation

Sensation

Melvyn Bragg and guests discuss sensation, a Victorian literary phenomenon. The Archbishop of York fulminated against them in his sermons, they spread panic through the pages of The Times and in a fam...

6 Nov 200328min

Populärt inom Historia

motiv
massmordarpodden
historiska-brott
p3-historia
olosta-mord
historiepodden-se
historianu-med-urban-lindstedt
rss-massmordarpodden
rss-brottsligt
rss-seriemordarpodden
konspirationsteorier
krigshistoriepodden
podme-bio-4
nu-blir-det-historia
harrisons-dramatiska-historia
rss-arkiv-stieg
militarhistoriepodden
vetenskapsradion-historia
rss-folkets-historia
rss-borgvattnets-hemligheter