Image for Snowball Earth theory

Snowball Earth theory

Duration: 05:01

Dropstones show that the relentlessly hot deserts of Namibia were once covered in ice. Geologists Paul Hoffman and Dan Schrag investigate. This programme was first shown in 2001.

Available since: Wed 1 Dec 2010

Credits

Presenter
John Lynch
Narrator
Dilly Barlow
Expert
Mikhail Budyko
Expert
Brian Harland
Expert
Paul Hoffman
Expert
Joseph Kirschvink
Expert
Chris Mckay
Expert
Guy Narbonne
Editor-in-chief
Bettina Lerner
Producer
Chris Durlacher
Director
Chris Durlacher

This clip is from

Horizon 2000-2001, Snowball Earth

A controversial theory posits that for millions of years Earth was entirely ice covered.

First broadcast: 22 Feb 2001

Image for Snowball Earth Not currently available on BBC iPlayer

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