By the 1930’s and 1940’s, the Arctic had warmed 10 degrees, the glaciers of Norway and Alaska had lost half their mass, the glaciers of Greenland and Norway were nearing catastrophic collapse, and glaciers were disappearing all over the world.

By the 1930’s and 1940’s, the Arctic had warmed 10 degrees, the glaciers of Norway and Alaska had lost half their mass, the glaciers of Greenland and Norway were nearing catastrophic collapse, and glaciers were disappearing all over the world. https://t.co/eS0ruYEh6i pic.twitter.com/czlv1O4QLE

— Steve Goddard (@SteveSGoddard) November 19, 2017