Researchers See Signs of Chronic Stress in Polar Bears' Blood

Abnormally long fasts linked to melting sea ice may be pushing polar bears to their limits.

Born to Roam - The Suffering of Polar Bears in Zoos by BornFree

Scientists find hundreds of new toxins in polar bear blood

One Life: Bears

Environmental toxins enter the brain tissue of polar bears

What Keeping Polar Bears in Zoos and Aquariums Does to These

Geographic Region North America

George Durner a polar researcher from the US Geological Survey

Climate change could mean more wildlife disease in the Arctic

Frontiers Stress in wildlife: comparison of the stress response

Serum plays an important role in reprogramming the seasonal