Horizon Season 39 Episode 20
Episode Title: The Day the Earth Nearly Died
Genre:
Documentary
Countries:
UK,
Airing Date: December 05, 2002
Runtime:50 mins
IMDb Rating:
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Horizon: Fossil records show that almost 250million years ago almost all life on Earth was wiped out incredibly quickly due to a mysterious cataclysm. Palaeontologists have long searched for the reason, but a trip to Greenland and the discovery of a strange force from deep below the oceans may finally have solved this age-old mystery.