New data from two Arctic sites suggest some surface layers are no longer freezing. If that continues, greenhouse gases from permafrost could accelerate climate change.
Ground collapses at Duvanny Yar, a permafrost megaslump along the Kolyma River in northern Siberia. New research suggests that some land in Arctic Alaska and Russia may no longer…
PHOTOGRAPH BY KATIE ORLINSKY, NATIONAL GEOGRAPHIC
CHERSKIY, RUSSIANikita Zimov was teaching students to do ecological fieldwork in northern Siberia when he stumbled on a disturbing clue that the frozen land might be thawing far faster than expected.
Zimov, like his father, Sergey Zimov, has spent years running a research station that tracks climate change in the rapidly warming Russian Far East. So when students probed the ground and took soil samples amid the mossy hummocks and larch forests near his home, 200 miles north…
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Exposing the Big Game 