How can a house made of snow keep you sheltered from the icy cold? Igloos seem like a great paradox, but they're actually quite practical. Who invented them and why?
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A warm house made of snow – how does an igloo
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TIL that igloos can retain a temperature of 60° F during -50
How Does An Igloo Work & Do They Keep You Warm?
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How Does Igloo Work & Do They Keep You Warm?