Contemporary environmental decisions are made within the context of sustainability aimed at meeting integrated ecological, economic and social goals. Most involve a complex mix of actors and institutions - differing values and differing interests. Choices are difficult and often controversial, and decision-making processes and contexts provide crucial influences on outcomes. This book explores these processes and context and the influences which affect them. For example: How do different value systems influence what environmental issues come onto the public agenda, and their management? What institutions and actors are involved in the processes and how? What tools are available and what are their limitations? How should we deal with uncertainty and risk? How do we incorporate relevant but very different forms of knowledge, and how do we manage the information `explosion'? The authors take a multidisciplinary approach and engage in themes from political science, law, economics, philosophy, natural sciences, geography, engineering and sociology. Their book is rich with practical examples, including three extensive case studies that illustrate the complexities and contestations of environmental decision-making.. The book is aimed at the ever-widening range of people who are, or are hoping to become, environmental professionals, whether from the scientific, technical or social science fields. It is also relevant for interested members of the public.