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Catastrophe: 1x2
Snowball Earth
650 million years ago Earth froze, pushing life to the edge of extinction.
Visited 1 times, 1 visit(s) today
1 - 1Birth of a Planet Nov. 24, 2008- 1 - 2Snowball Earth Dec. 01, 2008
- 1 - 3Planet of Fire Dec. 08, 2008
- 1 - 4Asteroid Strike Dec. 15, 2008
- 1 - 5Survival Earth Dec. 22, 2008