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Contact: Angela Stark
The Optical Society

Polar Bears Know How to Insulate

Caption: Polar bears can insulate their bodies to temperatures of 37 degrees Celsius (98.6 F) even when outside temperatures are a frigid -40 C (-40 F). New calculations suggest polar bear fur might be so effective at trapping warmth because the hairs scatter infrared light.

Credit: Alan D. Wilson

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Related news release: Fur and feathers keep animals warm by scattering light

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