Polar bears aren't actually white. Their color is determined by the lighting and climate of their surroundings. ... That's because polar bear fur is transparent and hollow.

Mimicking polar bear fur, which is able to insulate the animal's body to temperatures of 98.6° F (37° C) when outside temperatures get as low as -40° F (-40° C) could lead to better building ...

The membrane pores that make polar bear hair hollow are arranged in a fractal pattern, maximizing heat qualities and helping the animals survive in a harsh climate, Chinese researchers report.

A polar bear’s fur doesn’t look any thicker than what you’ll find on other bears, but it somehow allows them to easily endure Arctic temperatures as cold as -50 degrees Fahrenheit, and it ...