摘要:Animal agriculture in the United States for the most part has industrialized, with negative consequences for air and water quality and antibiotic use. We consider health and environmental impacts of current US swine production and give an overview of current federal, state, and local strategies being used to address them. ONE OUTCOME OF THE industrialization and concentration of animal agriculture is that the vast majority of animals now raised for food in the United States live within concentrated animal feeding operations (CAFOs). This change has imposed costs on society, the full dimensions of which are only beginning to be appreciated. In this article, we consider some of the health and environmental impacts as economic “externalities” and give an overview of current federal, state, and local strategies being used to address them.