Season 3 · Episode 22 of 39
Aired Jul 17, 2019
How Volcanoes Froze the Earth (Twice)
Wed, Jul 17, 2019
0 of 39 watched this season
Over 600 million years ago, sheets of ice coated our planet on both land and sea. How did this happen? And most importantly for us, why did the planet eventually thaw again? The evidence for Snowball Earth is written on every continent today.
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Airs
Wed, Jul 17, 2019
Show
PBS Eons
246 episodes
Episode
S3 · E22
in PBS Eons