Season 38Episode 51h 0m
Snowball Earth
2001-02-220.0 rating
The controversial theory that for millions of years the Earth was plunged into catastrophe - entirely smothered in ice up to one kilometre thick.
2001-02-220.0 rating
The controversial theory that for millions of years the Earth was plunged into catastrophe - entirely smothered in ice up to one kilometre thick.