After millennia as carbon dioxide sink, more than one-third of Arctic-Boreal region is now a source

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fire burning near scotty creek research station

Fire burning near Scotty Creek Research Station.

photo by Mason Dominico

After millennia as a carbon deep-freezer for the planet, regional hotspots and increasingly frequent wildfires in the northern latitudes have nearly canceled out that critical storage capacity in the permafrost region, according to a new study published in Nature Climate Change.

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