by John Light
Then scientists observed methane gas bubbling to the surface from the sea floor in the Arctic Ocean, where for eons it lay trapped in a flammable slush. The researchers who discovered the plumes — a joint team of Americans, Swedes and Russians on an expedition called the SWERUS-C3 — suspect the methane is escaping due to an influx of warmer water from the Atlantic Ocean, which, in turn, could be tied to climate change.
The release of methane on a large scale has long worried scientists. The greenhouse gas is 20 times more damaging to the Earth over a 100-year period than CO2, and is even more potent in the short term. Should the deposits trapped within the Arctic escape into the air, it could kick off a highly destructive climate feedback loop: The methane would cause rapid warming, which would melt more of the Arctic, which would release more methane, which would cause more warming.
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