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College of Arts and Sciences U.S. Geological Survey

Bear Watching

Chukchi Sea polar bearThe headlines paint a dire picture: By the 2030s, global warming could completely melt Arctic sea ice, imperiling the 19 known polar bear populations that range across the United States, Canada, Russia, Greenland, and Norway.

Could, as some fear, the trend spell extinction for Ursus martimus? » More …