How Volcanoes Froze the Earth...Twice
Season 2 Episode 29 | 10m 29s Video has closed captioning.
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.
Problems Playing Video? | Closed Captioning