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)

Dietrich Bonhoeffer

Dietrich Bonhoeffer

Melvyn Bragg and guests discuss the ideas and life of the German theologian, born in Breslau/Wroclaw in 1906 and killed in the Flossenbürg concentration camp on 9th April 1945. Bonhoeffer developed id...

27 Sep 201849min

Automata

Automata

Melvyn Bragg and guests discuss the history of real and imagined machines that appear to be living, and the questions they raise about life and creation. Even in myth they are made by humans, not born...

20 Sep 201852min

The Iliad

The Iliad

Melvyn Bragg and guests discuss the great epic poem attributed to Homer, telling the story of an intense episode in the Trojan War. It is framed by the wrath of the Greek hero Achilles, insulted by hi...

13 Sep 201848min

William Morris

William Morris

Melvyn Bragg and guests discuss the ideas of William Morris, known in his lifetime for his poetry and then his contribution to the Arts and Crafts movement, and increasingly for his political activism...

5 Juli 201853min

The Mexican-American War

The Mexican-American War

Melvyn and guests discuss the 1846-48 conflict after which the United States of Mexico lost half its territory to the United States of America. The US gained land covered by the states of Texas, Utah,...

28 Juni 201849min

Echolocation

Echolocation

Melvyn Bragg and guests discuss how some bats, dolphins and other animals emit sounds at high frequencies to explore their environments, rather than sight. This was such an unlikely possibility, to na...

21 Juni 201851min

Montesquieu

Montesquieu

Melvyn Bragg and guests discuss the ideas of Charles-Louis de Secondat, Baron de La Brède et de Montesquieu (1689-1755) whose works on liberty, monarchism, despotism, republicanism and the separation ...

14 Juni 201849min

Persepolis

Persepolis

Melvyn Bragg and guests discuss the role of the great 'City of the Persians' founded by Darius I as the ceremonial capital of the Achaemenid Empire that stretched from the Indus Valley to Egypt and th...

7 Juni 201851min

Populärt inom Historia

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