Climate change is transforming ecosystems in the far north. An international team of scientists has made some surprising discoveries.

At the edge of the Arctic in northern Canada, the annual migration of polar bears draws tourists, photographers, and scientists like Geoff York. Buggies traverse the frozen terrain, bringing tourists ...

Netflix's "Our Planet II" nature series is filled with stunning moments of Earth's wildlife on the move. The four-part follow-up to 2019's "Our Planet" explores the mystery of animal migration and the ...

The sea ice of Hudson Bay is what makes life possible for polar bears. It’s as important to them as the air they breathe. “I mean, polar bears — their whole life history has evolved around sea ice, ...

Polar bears are one of the most majestic, yet fearsome animals on the planet. The largest living species of bear and the largest land carnivore, the polar bear is closely related to the brown bear. So ...