New research finds that grease that coats polar bear fur contains a specialized mixture of chemicals that make it resistant to freezing.

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.

There's something about polar bears that's always puzzled the people who study them. How do they seem to repel snow? The animals spend their lives in cold climates, sometimes rolling around in snow, but walking away without any of it clinging to their fur.

Polar bears thrive in the harsh Arctic due to unique adaptations. Scientists discovered their greasy fur prevents ice from sticking, helping them stay warm. A study analyzed the chemical makeup of their hair,