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Research Looks at Natural Fertilizer for Greener Agriculture, Cleaner Water

Fertilizer is made of nutrients like nitrogen and phosphorus. Chemical fertilizers require huge amounts of energy to produce. But there are other, natural and more readily available sources. The University of Michigan, with support from the National Science Foundation, is working at making our water cleaner, and our agriculture more sustainable, by capturing one of those sources, rather than flushing it down the toilet. On a hot summer afternoon near Brattleboro, Vermont, farmer...

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