Polar bears near Svalbard are gaining fat despite sea ice loss, revealing how some Arctic wildlife is adapting to warming.

Remarkably, the number of days with no ice in the region increased by roughly 100 during that period. And yet, as the authors found, the body condition of both male and female polar bears—i.e., how ...

In a warming world, the polar bear has become the unofficial mascot of ecological collapse. We’ve all seen the photos of ...

A population of bears in Norway’s Arctic is confounding scientists’ expectations, getting fatter and healthier even as the ...

Polar bears are particularly vulnerable to climate change, as they rely on sea ice to hunt seals. A new study analyzed a small subpopulation of polar bears in southeastern Greenland and found small ...

The bears began feeding on alternative food sources, researchers found.

Polar bears are now adding new foods to their diet, including reindeer, walruses and bird eggs ...

Polar bears are leaping through their evolution in real time as rising temperatures threaten their habitat. A population of bears was found in a climate warmer than one in which they usually exist, ...