If we want clean water to drink, clean air to breathe, a climate that can sustain human life and an environment that fosters human health, our state legislators must move as quickly as possible to completely phase out the use of synthetic nitrogen fertilizer.

TAKE ACTION: Tell your state

Across this central northern county, wind turbine blades slowly slice the cold air over winter-brown fields. The 67 wind turbines of the Meridian Way Wind Farm straddle dozens of farms and ranches, following the contours of the land and the eddies of the wind above it. The turbines are tall enough that their size is hard to gauge from cars driving by.

Mark Kastel, a passionate organic farming watchdog, lays out the crisis that is chipping away at the moral high ground occupied by organic food. Consumers pay a premium price for federally certified organic farm goods, he says, not just for the selfish reason of protecting their own health from chemical additives, but also because “they believe they’re doing something good for society.”

As the number of massive livestock farms balloons in states like Iowa, Maryland, and Nebraska, communities are scrambling to figure out how to control the pollution and waste produced by thousands — or tens of thousands — of animals. In some places, officials have opted to ban the mega-farms altogether, and the idea of a moratorium on the biggest animal farms is gaining support in local governments, statehouses, and even in Congress.