seconds: Million 0.0328 years; Billion 31.7 years; Trillion 31,710 years


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Monday, March 7, 2011

The world’s largest underground body of fresh water is running dry

US farmers fear the return of the Dust Bowl

For years the Ogallala Aquifer, the world’s largest underground body of fresh water, has irrigated thousands of square miles of American farmland. Now it is running dry

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