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Created 12/21/2011 - 1 year ago
DRYING OUT IN THE U.S.: The falling water level of Lake Mead near Las Vegas has left behind a white ring of mineral deposits
Source
www.scientificamerican.com
The #southwestern U.S. looks a lot like #Australia before its 9 year #drought. What we can learn from them: http://t.co/e5K4N3wM @sciam