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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 - Oscillating Fan
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Oscillating fans began showing up in the U.S. in the early 20th century, thanks to electricity and inventor Nikola Tesla’s alternating current motors, according to Slate.


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