Some 250 million years ago, all but five per cent of life on Earth was wiped out in the greatest disaster our planet has ever experienced, yet the cause of this event has long remained a mystery. Palaeontologists in Greenland explain the answers.

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Main Cast: Jack Fortune, Adrian Jones, Vincent Courtillot, Gregory Retallack, Peter Ward, Paul Wignall, Michael Benton, Michael R. Rampino

Director: Nick Davidson

Writer: Nick Davidson

Editors: Neil Patience, Paul Carlin

Cinematographers: David Baillie, Russell Belter

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