Researchers say they have successfully made a synthetic version of polar bear fur that is not only lighter than cotton but also warmer.
Three engineers at the University of Massachusetts Amherst have developed a two-layered fabric that models not just the bear's fur but also its black skin that helps it stay warm.
"By focusing energy resources on the 'personal climate' around the body, this approach could be far more sustainable than the status quo." "But the fur is only half the equation," Trisha L. Andrew, the paper's senior author, said. "The other half is the polar bears' black skin." At the same time, the fur also helps prevent the skin from radiating too much warmth, akin to a thick blanket that warms itself up and then traps the heat, the researchers say.
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