Eons (2017)
S03E22 How Volcanoes Froze the Earth (Twice)
Episode Overview
More than 600 million years ago, massive ice sheets enveloped the Earth, covering both land and oceans. What led to this dramatic freeze? And crucially, what caused the planet to warm up again? The signs of this phenomenon, known as Snowball Earth, can still be found etched across every continent today.
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