Will Winter and Todd Churchill have a plan. It's simple, it's workable, and if enough people do it, it will shrink our carbon footprint, expand biodiversity and wildlife habitat, promote human health, humanize farming, control rampant flooding, radically decrease the use of pesticides and chemical fertilizers, and-for those of us who still eat the stuff-produce a first-class, guilt-free steak. Their plan: let cows eat grass. The two men share a background in conventional farming. Winter came of age ...