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The history of keeping cool

POSTED: 12:24 PM Jul 18 2012   UPDATED: 9:59 AM Jul 16 2013

With temps on the rise nationwide, look back at the ways humans have tried to stay cool through the centuries.

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With much of the nation baking under intense heat, look back at the history of fans, air conditioners and other ways humans have tried to stay cool through the centuries.

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