Can snow really keep you warm?
Otters and reindeer know what they’re doing in order to stay comfortable in ultra-cold conditions. Inuits developed the same ability hundreds of years ago, but they weren’t born with it. They realized that snow contains a fair amount of air and air makes a good insulator.
In this short video from PBS Digital Studios, you’ll finally get the answer to that question you’ve always been asking ... “how the heck does an igloo manage to keep occupants warm when it’s made of frozen water?”
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