This book addresses the evolving crisis in agriculture and sketches the 'community economy' that grounds agricultural enterprise more accurately than the industrial model. In its current practice, agriculture is (in the United States but increasingly in the rest of the world) unsustainable and destructive. The most immediately unsustainable feature of industrial agriculture is its dependence on the products of petroleum--as feedstock for fertilizers, herbicides, and pesticides, and as fuel for the farm machinery and transport of agricultural products into the cities. The problems of agriculture and in general the food systems to which it is attached range from the vulnerability of monocultures to new and stronger pests to the emerging medical problem of obesity. The need for agricultural reform is widely acknowledged; one part of the new work being done suggests that food production in the cities may solve several of its problems at once. This book is suitable for both undergraduate and graduate students in agriculture and environmental studies.