Arctic Sinkholes I Full Documentary I NOVA I PBS

NOVA PBS Official – Feb 2, 2022

Official Website:

In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate.

Colossal explosions shake a remote corner of the Siberian tundra, leaving behind massive craters. In Alaska, a huge lake erupts with bubbles of inflammable gas. Scientists are discovering that these mystifying phenomena add up to a ticking time bomb, as long-frozen permafrost melts and releases vast amounts of methane, a potent greenhouse gas. What are the implications of these dramatic developments in the Arctic? Scientists and local communities alike are struggling to grasp the scale of the methane threat and what it means for our climate future.

Chapters 00:00 Introduction 02:22 Giant Sinkhole in Siberia 05:54 Evidence of Methane in Craters 09:02 Alaskan Lake Bubbling 14:47 Effects of Permafrost Thaw on Climate 17:26 Native Alaskan Solutions to Permafrost 21:37 Organic Matter Impacted by Permafrost 24:44 Greenhouse Gasses Emitted from Permafrost Thaw 33:37 Fossil Methane in Earth’s Crust 42:19 Tipping Point: Arctic Regions are Sinking 47:47 How Communities are Finding Solutions 50:15 Conclusion

(Premieres Wednesday, February 2 at 9PM ET on PBS.)

© 2022 WGBH Educational Foundation

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