Monday, November 15, 2010

Geography Awareness Week 2010: Very Rare Fresh, Usable Water

Geography Awareness Week is upon us and the theme for 2010 is freshwater.  Freshwater is the absolute must for human life.  While we are commonly taught that seven-tenths of the world's surface is water we ignore the fact that most of it is unusable salt water.  The United States Geological Survey has some great charts showing just how rare fresh, usable water is

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