and even green. That's because polar bear fur is transparent and hollow.When light strikes the outer fur some of it is absorbed while the rest is scattered away. The result? The fur can appear as ...

In the Arctic, polar bears are equally at home swimming in the frigid waters or galloping across fields of ice and snow. When they emerge from the water, their fur temperature drops to nearly that of ...

and even green. That's because polar bear fur is transparent and hollow.When light strikes the outer fur some of it is absorbed while the rest is scattered away. The result? The fur can appear as ...

A polar bear's insulating fur shown under infrared heat imaging taken with a FLIR E75 24o (FLIR Systems OÜ, Estonia) Svalbard Archipelago, Norway.

Grizzly bears, for example, are a subspecies of brown bear found in parts of North America. There are many different ...

By the time they emerge in the spring, the cubs are covered in fluffy white fur and weigh 22 to 26 pounds. But because polar bears (Ursus ... magazine’s Graeme Green. The new study combines ...