Agricultural sustainability has different meanings, depending on the context. But many people share a concern that the current, highly productive agricultural system has become so dependent on agri-chemicals that problems have emerged affecting the environment, food safety, farm-worker safety, and production costs. There are hindrances to change, however, and research on low-energy-input farming is still developing. A broad approach is required, taking into consideration not only the farm production system but also the need to “sustain” society as a whole.