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Friday, September 08, 2006

Siberian lakes burp “time-bomb” greenhouse gas

FAIRBANKS, Alaska--Frozen bubbles in Siberian lakes are releasing methane, a greenhouse gas, at rates that appear to be five times higher than previously estimated and acting as a positive feedback to climate warming, said Katey Walter, in a paper published today in the journal Nature.

Walter's project is the first time this type of bubbling has been accurately quantified.

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