Cave in Canada frozen since Ice Age (video)

This cave has been frozen since the last Ice Age

(NOVA PBS Official) Feb. 19, 2020. This cave in Canada remains frozen every summer — as it has for every summer in the last 10,000 years. It was the last Ice Age when it went into a deep freeze it has yet to emerge from. What can it tell us about the earth's future climate?

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PRODUCTION CREDITS

• Polar Extremes Director: Lucy Haken
• Assistant Producer: Sacha Thorpe
• Digital Production: Angelica Coleman
• © WGBH Educational Foundation 2020