Polar bears in Canada's Western Hudson Bay — on the southern edge of the Arctic — are continuing to die in high numbers, a new government survey of the land carnivore has found. Females and bear cubs ...

(Reuters) - Rising temperatures that melt sea ice in the Arctic will probably reduce the polar bear population by a third over the next few decades, and the same warming trend is likely to worsen the ...

The global polar bear population is likely to decline by more than 30% in the next 35 to 40 years, according to a new report. Climate change is the single biggest threat to polar bear numbers ...

A study suggests a key role for gene copy number changes in polar bear evolution. Polar bears and brown bears occupy distinct ecologies, despite having diverged comparatively recently--less than ...