Source: Dan Charles, NPR, 5/30/19


John Draper and I are sitting in the cab of a tractor on the research farm he manages for the University of Maryland, alongside the Chesapeake Bay. Behind us, there's a sprayer. "So, away we go!" Draper says. He pushes a button, and we start to move. A fine mist emerges from nozzles on the arms of the sprayer. We're spraying glyphosate, killing off this field's soil-saving "cover crop" of rye before planting soybeans.

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