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Politics : Formerly About Advanced Micro Devices

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To: Sdgla who wrote (906979)12/9/2015 9:00:04 PM
From: Wharf Rat  Read Replies (1) of 1571929
 
Who knew?

Tree Rings Reveal History of History-Changing Mexican Droughts"Super droughts" may have helped bring down the Toltec and Aztec civilizations

scientificamerican.com

Drought Led to Collapse of Civilizations, Study Says

Study of fossilized pollen helps solve an intriguing historical mystery.

news.nationalgeographic.com

As Brazil's Largest City Struggles With Drought, Residents Are Leaving
11/22/15

npr.org
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