New research in the journal Science suggests that greenhouse warming has extended a cycle of polar thaw that began about 1840 and is now rapidly accelerating the rate of ice-cap melting. Jonathan T. Overpeck, lead author of the study, said palpable effects include less sea ice in the winter, receding glaciers, and thawing of permafrost.
Greenhouse Research
New research in the journal Science suggests that greenhouse warming has extended a cycle of polar thaw that began about 1840 and is now rapidly accelerating the rate of ice-cap melting. Jonathan T. Overpeck, lead author of the study, said palpable effects include less sea ice in the winter, receding glaciers, and thawing of permafrost.
