Now, researchers have discovered the bears have another unexpected Arctic adaptation: greasy fur. It’s a trait that, surprisingly, might help us find alternatives to “forever chemicals,” a class of widely used compounds that are linked to a range of health problems in people.

Polar animals as inspiration. Polar bears have a thick layer of fat below two layers of fur that help trap their internal body heat. According to Polar Bears International, these

Indigenous peoples of the Arctic traditionally use polar bear fur for its ice-resistant properties, but the science behind the bears’ natural antifreeze hasn't been studied until now