A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

New research reveals the Arctic is changing fast as permafrost regions are warming, forests are stressed, and flooding is ...

A new study of the rapidly warming Arctic-boreal region identifies "hotspot" ecosystems experiencing some of the fastest and ...

New research reveals a concerning pattern of rapid and extreme climate changes across the Arctic, particularly in Siberia, ...