Support WBURHow American Food Companies Go GMO-Free In A GMO WorldPlay07:47Download AudioDan CharlesFebruary 04, 2014 ShareAllen Williams grows corn and soybeans for Clarkson Grain, which has been selling GMO-free grain to Japan for years. (Dan Charles/NPR)
Allen Williams grows corn and soybeans for Clarkson Grain, which has been selling GMO-free grain to Japan for years. (Dan Charles/NPR)