Everywhere you look people are more aware of what they eat and where their food comes from. In a cafeteria in Los Angeles, children make their lunchtime food choices at fresh-fruit and salad bars stocked with local foods. In a community garden in New York, low-income residents are producing organically grown fruits and vegetables for their own use and to sell at market. In Madison, Wisconsin, shoppers select their food from a bounty of choices at a vibrant farmers’ market. Together at...