Geography ❯ Arctic Regions

Alaska

Permafrost Regions Brooks Range Yukon Territory Local Communities Permafrost Ecosystems Glaciers Siberia

40,000-Year-Old Permafrost Microbes Revived After Months of Warming, Lab Study Finds

The experiments indicate longer warm seasons are the critical trigger for microbial activity that can release greenhouse gases.

NASA Images Show Alaska’s Prow Knob Has Become an Island as Alsek Glacier Retreats

Permafrost Thaw Is Turning Alaska’s Salmon River Toxic, PNAS Study Finds