This Handbook provides an overview of major current debates, trends and perspectives in ecological economics. It covers a wide range of issues, such as the foundations of ecological economics, deliberative methods, the de-growth movement, ecological macroeconomics, social metabolism, environmental governance, consumer studies, knowledge systems and new experimental approaches. Written by leading authors in their respective areas of specialisation, the contributions systematize the 'state of the art' in the selected topics, and draw insights about new knowledge frontiers.