Naked Cap/Gaius Publius: Massive Permafrost Thaw Documented in Canada, Huge Carbon Release May Be Coming. March 04, 2017 by Garret Vreeland in Environmental, Nature [T]he Arctic permafrost is like a vast underground storage tank of carbon, holding almost twice as much as the atmosphere. At that scale, small changes in how the carbon is released will have big effects. Oh sh-t.