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

It is a question she hopes to answer with upcoming DNA research. “Modern polar bears have translucent fur – they lack pigment – whereas modern brown bears, despite the name, come in a range ...

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 ...