PhysOrg: Researchers from McGill and the U.S. Geological Survey, more used to measuring thawing permafrost than its expansion, have made a surprising discovery. There is new permafrost forming around Twelvemile Lake in the interior of Alaska. But they have also quickly concluded that, given the current rate of climate change, it won't last beyond the end of this century. Twelvemile Lake, and many others like it, is disappearing. Over the past thirty years, as a result of climate change and thawing permafrost,...