Two separate but very much related events that could radically change the way America farms and feeds itself are big in the news right now. Both concern a matter dear to my heart: Food labeling. As leading food and ag writer, Tom Philpott, recently wrote, the upcoming vote in California on Proposition 37 “could spur a revolution in the way our food is made.” If adopted, Prop 37 would simply require the labeling of food containing genetically modified (GM) ingredients.