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The history of keeping cool

Published On: Jul 18 2012 11:24:26 AM CDT

Look back at the history of fans, air conditioners and other 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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