This course provides an introduction to markets and market failure in the context of the environment. Students learn the reasons behind why environmental problems exist, and economic solutions to these problems, which include regulations, taxes, subsidies, and pollution permit trading schemes. Methods for determining the benefits and costs of environmental preservation are covered. While controversial at times, such accounting is fundamental to social decision making. One goal of the course is to make students aware that the answer to environmental issues is not as simple as "save the planet", and that there are other perspectives, complexities and trade-offs that have to be taken into account.