In this challenging work, the author argues that the goal of any food system should not simply be to provide the cheapest calories possible. A secure food system is one that affords people and nations - in both the present and future - the capabilities to prosper and lead long, happy, and healthy lives. For a variety of reasons, food security has come to be synonymous with cheap calorie security. On this measure, the last fifty years have been a remarkable success. But the author shows that these cheap calories have also come at great cost, to the environment, individual and societal...