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SunCloud-777 OP t1_j23p56h wrote

Reply to comment by VacelationWaffles in TIL Snow is an excellent insulator because it consists of about 90–95 percent trapped air (fresh). This is the reason why igloos are warmer inside than outside, and why some animals in colder regions build snow caves to spend the winter while hibernating. by SunCloud-777

yes, from what i understand, a small vent is situated at the top of the igloo, plus bec it’s dome-shaped what little ice melt will flow down the side.

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