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The real story on nitrates in Iowa’s rivers?

April 17, 2015  By Donnelle Eller/Des Moine Register

April 17, 2015, Des Moines, Iowa – Nitrate levels in Iowa’s major rivers have increased more than threefold since the 1950s, but have stabilized – and even slightly declined – in recent decades, according to an in-depth review of available research.

The Des Moines Register reports. | READ MORE

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