(Ecological Society of America) Nitrogen is both an essential nutrient and a pollutant, a byproduct of fossil fuel combustion and a fertilizer that feeds billions, a benefit and a hazard, depending on form, location, and quantity.
Agriculture, industry and transportation have spread nitrogen liberally around the planet, say scientists in the latest edition of ESA's Issues in Ecology series, "Excess Nitrogen in the U.S.
Environment: Trends, Risks, and Solutions," with complex and interrelated consequences for human and ecological health.
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