This course analyzes the economics of public policy toward the environment. It examines the problem of market failure in the presence of externalities and public goods, and considers policy responses to these market failures, including command-and-control regulations, tax and subsidy incentives, and marketable pollution permits. These policies are examined in the context of, for example, urban air pollution, ozone depletion and global warming, water pollution, municipal and hazardous waste, threats to biodiversity, and economic development. Particular attention is paid to methods of quantifying the benefits and costs of environmental protection.