Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 38 · Episode 5 ·
Snowball Earth
The controversial theory that for millions of years the Earth was plunged into catastrophe - entirely smothered in ice up to one kilometre thick.
11 episodes
No episodes match your search.
Titles you might also enjoy
About
Episode 5 of season 38 of Horizon: “Snowball Earth”. Aired 2001-02-22. Watch it online free on ZapFlix.