The history of keeping cool

Published On: Jul 18 2012 09:24:26 AM PDT   Updated On: Jul 22 2014 05:02:05 AM PDT

This week marks the 112th anniversary of air conditioning, and aren't we all thankful! Look back at the ways humans have tried to stay cool through the centuries.

Cooling - Office AC
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In the 1940s and 50s, air conditioners were marketed to offices as a way to increase productivity. The industry had stats to back this up, including one study that showed typists in a cooler office increased output by 24 percent, according to Time.


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