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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: Sdgla who wrote (906979)12/9/2015 9:00:04 PM
From: Wharf Rat  Read Replies (1) | Respond to of 1571976
 
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