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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 - Modern Day
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More homes got air conditioning in the 1950s, but it would still be a little while before the trend really took off. Ten percent of homes had air conditioning in 1965, but that number jumped to 86 percent by 2007, according to Slate.

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