A new study by scientists from Oregon State University and the Environmental Protection Agency showed -- much to the surprise of the researchers -- that soil clings tenaciously to the first precipitation after a dry summer, and holds it so tightly that it almost never mixes with other water.
To continue reading follow link
http://www.sciencedaily.com/releases/2010/01/100121173452.htm
Thursday, January 28, 2010
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