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Episode

S47 E1: Polar Extremes

Following a trail of fossils found in all the wrong places–beech trees in Antarctica, redwoods and hippo-like mammals in the Arctic–NOVA uncovers the bizarre history of the poles, from miles-thick ice sheets to warm polar forests teeming with life.
Aired: 2/5/2020 | 1:53:06 | Expires: 1/20/2023
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