Edwin Zaccai holds a PhD in environmental sciences, a civil engineering physicist and a degree in philosophy. Professor at the Université Libre de Bruxelles, he heads the Centre d'Etudes du Développement Durable (CEDD), which he founded in 1997. He was also a lecturer at Sciences Po Paris. His research and teaching focus on different aspects of sustainable development related to the transformations of societies as a result of environmental issues. He has published on many topics that are interdisciplinary and often collaborative: the precautionary principle, environmental indicators, environmental inequalities, sustainable consumption, the history of environmental ideas, climate controversies, and adaptation to climate change. A member of the Federal Council for Sustainable Development (1997-2012), he is a member of several scientific committees of journals, such as Vertigo, Développement Durable et Territoires, Natures Sciences Sociétés, Belgeo, and the Revue Française de Socio-Economie. Among his books: E. Zaccai, 25 years of sustainable development, and after? (PUF, 2011); E. Zaccai, F. Gemenne and JM. Decroly (dir.), Controverses climatiques, sciences et politiques, (Presses de Sciences Po, 2012).