This textbook takes a holistic, interdisciplinary and analytical approach to the development, implementation and impact of environmental policies that govern our relationship with the environment. It provides comprehensive coverage and clear explanation of principles including sustainability, the precautionary principle, public participation, equity and polluters pays. It also covers how principles are applied in real life to a range of issues from persistent chemical pollution to climate change to fishing rights and watershed usage. As well as full coverage of economic approaches including cost-benefit analysis and emissions, pollution and ecosystem services trading.