The News: Scientists studying global warming in the Arctic have discovered a previously unknown source of methane working its way into the atmosphere, a source that is releasing large amounts of the gas each year. Methane is, molecule for molecule, a far more potent global-warming gas than carbon dioxide. The newly discovered emissions are welling up from the continental shelf off Siberia's northern coast. (Read more from the Mar 4th Christian Science Monitor.)
The Research:
Read the research behind this story in Science 327, 1246 (2010): "Extensive Methane Venting to the Atmosphere from Sediments of the East Siberian Arctic Shelf." Natalia Shakhova, et al.
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