NOVA

This Canadian Cave Has Been Frozen Since the Last Ice Age

Clip: Season 47 Episode 1 | 3m 11s Video has closed captioning.

This cave in Canada remains frozen every summer—and it's been frozen since the last Ice Age 10,000 years ago. What can this tell us about Earth's future climate?

Aired: 02/05/20

Rating: NR

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Problems Playing Video? | Closed Captioning

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