As Arctic winters warm, polar bears are faced with a troubling situation.

Intelligent, adaptable and fierce, the polar bear learned how to survive in a place that offers few comforts to any creature.

For the layperson, trying to understand the essence of climate change research can be exasperating. Here, NATURE breaks down its impact on Antarctica.

The polar bear has become the poster child of global warming, but there's more to the Arctic than ice and polar bears.