Arctic Sinkholes Preview
Preview: Season 49 Episode 1 | 30sVideo has Closed Captions
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.
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National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.
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Arctic Sinkholes Preview
Preview: Season 49 Episode 1 | 30sVideo has Closed Captions
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.
Problems with Closed Captions? Closed Captioning Feedback
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Portable Homes Help Communities Adapt to Climate Change
Video has Closed Captions
See how one Alaskan community is dealing with the effects of rising Arctic temperatures. (4m 18s)
What's Causing Water to Bubble in the Arctic?
Video has Closed Captions
Scientists look for the source of large bubbles in an Arctic lake. (4m 21s)
Providing Support for PBS.org
Learn Moreabout PBS online sponsorship
National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.