Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

A study in the journal Science Advances reveals how polar bears manage to get wet in the cold without their fur freezing.

Extensive evidence, including global temperature and sea ice data, shows Earth's climate is changing due to human activity.

New research at NAU looks at faster warming in the Arctic, and highlights concern about risks to the U.S. of a political ...