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Lab technician takes water sample from Des Moines River

November 17, 2013 | 6:00 a.m. CST
Lab technician Bill Blubaugh takes a water sample from the Des Moines River in Des Moines. A mandate to increase ethanol production has resulted in millions of acres of new row crops being planted, in some cases on highly erodible land, helping to increase nitrate pollution in municipal water supplies.

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