The book brings together twelve original essays on the meaning and implications of sustainable development. The collection assesses the theoretical debate over the concept of sustainable development, and looks at the unique experiment in applying this practically which has taken place in Norway to discover how the concept can illuminate practical policy across a wide range of fields. Topics covered include sustainable development as a global ethics; the concept of need; global and generational equity; the limits of nature; implications for economics; and the role of technology. The editors outline the logic of the approach and draw together the implications of the individual studies for a more focused and consistent application of the concept.