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)

Christine de Pizan

Christine de Pizan

Melvyn Bragg and guests discuss the life and works of Christine de Pizan, who wrote at the French Court in the late Middle Ages and was celebrated by Simone de Beauvoir as the first woman to 'take up ...

8 Jun 201750min

Enzymes

Enzymes

Melvyn Bragg and guests discuss enzymes, the proteins that control the speed of chemical reactions in living organisms. Without enzymes, these reactions would take place too slowly to keep organisms a...

1 Jun 201748min

Purgatory

Purgatory

Melvyn Bragg and guests discuss the flourishing of the idea of Purgatory from C12th, when it was imagined as a place alongside Hell and Heaven in which the souls of sinners would be purged of those si...

25 Mai 201748min

Louis Pasteur

Louis Pasteur

Melvyn Bragg and guests discuss the life and work of Louis Pasteur (1822-1895) and his extraordinary contribution to medicine and science. It is said few people have saved more lives than Pasteur. A c...

18 Mai 201751min

Emily Dickinson

Emily Dickinson

To celebrate Melvyn Bragg’s 27 years presenting In Our Time, five well-known fans of the programme have chosen their favourite episodes. Comedian Frank Skinner has picked the episode on the life and w...

11 Mai 201748min

The Battle of Lincoln 1217

The Battle of Lincoln 1217

Melvyn Bragg and guests discuss The Battle of Lincoln on 20th May 1217, when two armies fought to keep, or to win, the English crown. This was a struggle between the Angevin and Capetian dynasties, on...

4 Mai 201753min

The Egyptian Book of the Dead

The Egyptian Book of the Dead

Melvyn Bragg and guests discuss the text and context of The Book of the Dead, also known as the Book of Coming Forth by Day, the ancient Egyptian collections of spells which were intended to help the ...

27 Apr 201746min

Roger Bacon

Roger Bacon

The 13th-century English philosopher Roger Bacon is perhaps best known for his major work the Opus Maius. Commissioned by Pope Clement IV, this extensive text covered a multitude of topics from mathem...

20 Apr 201750min

Populært innen Historie

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