The history of keeping cool

Published On: Jul 18 2012 09:24:26 AM PDT   Updated On: Jul 16 2013 06:59:54 AM PDT

With temps on the rise nationwide, look back at the ways humans have tried to stay cool through the centuries.

Cooling - First Air Conditioner
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Willis Carrier built the first modern air conditioner in 1902 to keep humidity down (and keep pages from wrinkling) in the New York printing plant where he worked, according to articles in Slate and The Atlantic. It accomplished its goal by sending air through coils cooled by water.

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