Climate watch. The release of methane on the Arctic is a sure cause of more global warming, a feedback loop. Dr Walter Anthony put out word among residents of Kotzebue, Alaska, that she was looking for weird lakes. So in lakes on Alaska's Brooks range and her findings, if confirmed, show the total impact from thawing permafrost could be similar to adding a couple of large fossil-fuel-emitting economies - say, two more Germanys - to the planet. From the Independent:

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