A polar bear has a moment in the Arctic winter sun ... Although, like most polar bears the Grinch was opportunistic, she (and the other reindeer-hunting polar bears we have seen) appear fitter ...

It is perhaps the single biggest factor determining how Svalbard reindeer will fare as the planet warms. We have all imagined a grim fate for the polar bear, left behind in an Arctic without ...

A survival expert, the polar bear has a thick layer of fat underneath its skin to protect it from the cold. Like the reindeer, it has two layers of fur: an outer layer that is thicker to protect ...

Reindeer have an ultra-fine and dense underfur with a shaggy upper layer. The outer hairs are hollow, like the fur of a polar bear, and provide insulation. The reindeer nose is not only furry ...

By comparison, the heaviest polar bear — considered to be the largest ... Like the cave bear, this specimen was found accidentally by reindeer herders. But perhaps even more startling was ...