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NOVA
Ancient Earth: Frozen
Season 50
Episode 12
700 million years ago, Earth was a giant snowball cloaked in ice from pole to pole. How did life manage to hold on through this deadly deep freeze, find creative ways to bounce back, and thrive in the dramatically different world that emerged?
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Discover the dramatic forces creating spectacular weather on neighboring planets and moons.
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Explore big discoveries that have revolutionized our understanding of the universe.
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Follow the quest to recover DNA millions of years old for the very first time.
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New evidence reveals the real story of Easter Island and the builders of its stone heads.
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Giant fossils uncovered in the Sahara Desert reveal new secrets of how whales evolved.
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A family turns to science in their struggle to rediscover a history obscured by slavery.