In a warming world, the polar bear has become the unofficial mascot of ecological collapse. We’ve all seen the photos of these majestic predators reduced to skin and bone, clinging to ever-shrinking ...

Arctic sea ice has large effects on the global climate. By cooling the planet, Arctic ice impacts ocean circulation, ...

Polar bears can struggle to adapt to climate change. Bears on Svalbard may be surviving on land prey and seals — but scientists warn it may not last.

Arctic sea ice helps cool the planet and influences weather patterns around the world, but it is disappearing faster than ever as the climate warms. Scientists have now developed a new forecasting ...

With the departure of the research vessel Polarstern from Punta Arenas (Chile) scheduled for this weekend, the "Summer ...

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

The bears have not lost weight over the past 20 years in the Norwegian archipelago, despite the region's accelerating warming. Among the reasons: They hunt prey other than seals, such as reindeer and ...

This story was produced in partnership with the Pulitzer Center’s Ocean Reporting Network. A haze of ice crystals in the air created a halo around the low sun as three snowmobiles thundered onto the ...