The history of keeping cool

POSTED: 09:24 AM PDT Jul 18, 2012    UPDATED: 05:02 AM PDT Jul 22, 2014 

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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