Eco-labelling programmes have been in existence for many years but their recent growth now extends to many products and services. The academic literature has grown in response and there have been several theoretical and empirical advances. This volume presents the best of previously published research on the design and effects of eco-labelling programmes. Whilst concentrating on the economic literature, the articles also approach the topic from a psychological, sociological and political point of view. Part One focuses on a range of theoretical developments, Part Two on empirical measurements of the effectiveness of eco-labelling, Part Three on the factors that influence the success and design of eco-labelling programmes and Part Four on the effects of eco-labelling on international trade and development.