Hidden below the surface of California's Central Valley are pollen grains from the Pleistocene that are providing scientists with clues to the severity of droughts that struck the region between glacial periods.
http://www.sciencedaily.com/releases/2015/11/151101102438.htm
The Moon is Full
Ancient pollen reveals droughts between Sierra Nevada glacier surges
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November 02, 2015 05:07PM |
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