Just how and when polar bears adapted to the Arctic is still debated. In this study , a team analyzed the genomes of 119 modern polar bears, 135 modern brown bears, and two fossilized polar bears.

For years, as the world has warmed, the territories of polar bears and grizzly bears have started to overlap. Grizzlies now venture into the Arctic more often. In doing so, they occasionally cross ...

Polar bears increasingly under threat as glaciers melt faster than ever 02:15. Churchill, Canada — On the edge of the Arctic in northern Canada, the annual migration of polar bears draws ...

Most polar bears live north of the Arctic Circle to the North Pole. This includes Alaska, Canada, Russia, Greenland and Norway.

The majestic polar bear leaps across the water, landing on an ice sheet with a semi-belly flop. That’s one of the sights tourist Emma Postolec caught during an Arctic cruise on Sept. 27.

A polar bear in the Arctic in 2021. Studies of polar bears are showing an emerging battle against pathogens many bears have not experienced previously. (Ekaterina Anisimova/AFP/Getty Images) ...

In the gateway to the Arctic, fat, ice and polar bears are crucial. All three are in trouble. A polar bear nurses her cub, Wednesday, Aug. 7, 2024, near Churchill, Manitoba.

1. Polar bears are classified as marine mammals. Because they spend most of their lives on the sea ice of the Arctic Ocean depending on the ocean for their food and habitat, polar bears are the only ...

• Letters from scientists, lawmakers, law professors, and citizens supporting polar bear protections • Center report, 2013: On Thin Ice • Center report, 2007: Not Too Late to Save the Polar Bear: A ...