Permafrost Explained in 90 Seconds

About This Video: The gigantic carbon-rich Arctic landmass has—until recently—locked away its greenhouse gases in a deep thaw for millennia. That is, until man-made climate change has begun to unlock its C02 stores, only then to be devoured by methane-spewing organisms.

Related Article: Explained in 90 Seconds: Permafrost (MotherJones)

Related News Story: Major methane release is almost inevitable