Canada's Permafrost Is Thawing 70 Years Earlier Than Expected, Study Shows. Scientists Are 'Quite Surprised'

Of course, "The Big Thaw" is not confined to Canada. This Alaskan
permafrost has melted, causing one of this lake's banks to collapse. 

As a result, its waters are draining into a river, then into the sea, 
perhaps leading to the lake's disappearance!
NPS Climate Change Response Photo (C.Ciancibelli)
The Canadian Arctic permafrost is thawing 70 years earlier than expected, a rate shocking a group of scientists who released the findings of their long-term study this month. More here.