The idea is simple enough, on paper: to bring together organic farming, which has been shown to sequester 1,000 pounds of carbon per acre per year, and no-till farming methods, where farmers don't plow their fields as a way of building up intensive root systems that absorb carbon dioxide. By bringing the two methods together, Rodale researchers think that farms could absorb as much as 3,000 pounds of CO2 per acre per year. And that adds up: