From feast to fast Polar bears, unlike their land-based cousins, are finicky. Brown bears may slurp up fatty salmon, but also eat berries and insects. Polar bears need lots of fat to survive, and may ...

ON HUDSON BAY — Searching for polar bears where the Churchill River dumps into Canada's massive Hudson Bay, biologist Geoff York scans a region that's on a low fat, low ice diet because of climate ...

A new method of tracking the dietary habits and contaminant exposure of animals in Arctic marine ecosystems is providing critical insights as climate change reshapes the region's food web. A team of ...

A sperm whale lies on its side amid shards of polar pack ice, dead and decomposing, its mouth hanging open in a silent scream. The lateral image on a flat plain resembles a textbook’s illustration of ...