Another solution to nitrate pollution: cover crops

NPR The Salt, February 2, 2015

Here’s How to End Iowa’s Great Nitrate Fight┬áby Dan Charles

Three weeks ago, Sara Carlson was driving to her job in Ames, Iowa, when she turned on the radio and heard me talking about nitrates in Iowa’s water.

“And I was like, ‘I really hope he nails this,’ ” she says.

This topic is Carlson’s specialty. She works with a group called Practical Farmers of Iowa. These farmers are devoted to farming in ways that protect the environment.

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