Nitrogen and Phosphorus runoff from agricultural chemicals is killing the gulf of Mexico, and local waterways as well. Iowa is a case in point. Chris Jones, a hydraulic engineer is the lead author on a new study just out from the University of Iowa talking about how that fertilizer runoff is an expanding problem, despite efforts to curb it. Agricultural runoff is not just a problem in Iowa, but in many states with major corn soy cropping. What to do about it, and how to fix this is the subject of this episode.

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