Polar bears aren't actually white.Turns out, they can come in all sorts of colors: yellow, gray, orange, and even green. That's because polar bear fur is transparent and hollow.When light strikes ...

Polar bears aren't actually white.Turns out, they can come in all sorts of colors: yellow, gray, orange, and even green. That's because polar bear fur is transparent and hollow.When light strikes ...

But she stresses that her team isn't the first to identify that polar bear fur has such special anti-icing properties. “We didn’t discover it,” she says. “It’s been known to Arctic ...

But she stresses that her team isn't the first to identify that polar bear fur has such special anti-icing properties. "We didn't discover it," she says. "It's been known to Arctic people for ...

White fur, blubbery skin, sharp claws. Polar bears seem perfectly adapted to their frigid habitat up north. Now, researchers have discovered the bears have another unexpected Arctic adaptation ...