Arctic Sinkholes I Full Documentary I NOVA I PBS

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 sinkholes. 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.

Courtesy of NOVA PBS Official on YouTube. Watch on YouTube ↗

More Science & Tech Documentaries

Richard Dawkins: The Greatest Show on Earth2010•1h 1m•HD•★8.8The Strange World of Nanoscience2012•17m•HD•★8.7Through the Wormhole2012•45m•HD•★8.6Rule from the Shadows: The Psychology of Power2014•37m•HD•★8.5Zero to Infinity | Full Documentary | NOVA | PBS2022•54m•HD•★7.8The Insane Real Engineering of the Nazi Enigma Machine2026•48m•4K•★7.8GERMANY IS OVER2026•14m•4K•★7.7The Discovery That Transformed Pi2021•19m•4K•★7.7Surviving with Fear (Full Episode) | Alaska: The Next Generation2024•44m•4K•★7.7Secrets in Our DNA (2021) | Full Documentary | NOVA2021•53m•HD•★7.7Atom: The Key to the Cosmos2023•50m•4K•★8.4Extreme Temperature Science With Richard Hammond2020•58m•HD•★8.0