Add Yahoo as a preferred source to see more of our stories on Google. A polar bear (Ursus maritimus) walks on pack ice in Svalbard, Norway. Andy Rouse, Nature Picture Library Polar bears are often the ...

Their icy hunting grounds are rapidly shrinking, but polar bears in Norway's remote Svalbard archipelago have defied the odds by bulking up instead of wasting away, a study said Thursday. The Barents ...

Each year, the burly bears of Katmai National Park and Preserve capture global attention in a March Madness-style bracket challenge as fans pick which bear advances in each round. “The bears have been ...

A new study has found that the trunks of trees in the Amazon have become thicker in recent decades — an unexpected sign of the rainforest’s resilience in response to record-high levels of CO2 in the ...