Professor William Rees is a bio-ecologist, ecological economist, former Director and Professor Emeritus of the School of Community and Regional Planning at the University of British Columbia. His early research focused on environmental assessment but gradually extended to the biophysical requirements for sustainability and the implications of global ecological trends.  Along the way, he developed a special interest in modern cities as "dissipative structures" and therefore as particularly vulnerable components of the total human ecosystem.

Rees is the author of over 150-peer reviewed papers and numerous popular articles on sustainability science and policy. He is a founding member and former President of the Canadian Society for Ecological Economics, a founding Director of the One Earth Initiative, and a Fellow of the Post-Carbon Institute. He was elected to the Royal Society of Canada in 2006, and in 2007, was awarded a prestigious Trudeau Foundation Fellowship. In 2012, Rees received an Honorary Doctorate from Laval University, the Boulding Prize in Ecological Economics, and a Blue Planet Prize (jointly with Dr Wackernagel). He was elected a full member of the Club of Rome in 2014.

Professor Doctor Lucia Reisch is a behavioral economist and Professor of intercultural consumer behavior and consumer policy at the Copenhagen Business School. She holds a doctorate in economics and social sciences from the University of Hohenheim (Germany) and received an MBA (education) at the University of California at Los Angeles. As a consumer researcher, her main focus is on sustainable consumption, consumer and sustainability policy, behavioral economics, and corporate sustainability. Besides running several European Union-funded research projects, she is engaged in high-level policy consulting. She is chairing the National Council of Advisors on Consumer Issues in Berlin and is a member of the German Council for Sustainable Development, consulting the German Chancellery. She has been elected a lifelong member of the German Academy of Technical Sciences and is Editor of theJournal of Consumer Policy.

Dr. Giorgos Kallis is an ecological economist, political ecologist, and Professor at the Institute of Environmental Science and Technology in Barcelona. He is the Coordinator of the European Network of Political Ecology and Editor of the book Degrowth: A Vocabulary for a New Era. His current work explores the hypothesis of sustainable de-growth as a solution to the dual economic and ecological crises. He was previously a Marie Curie Fellow at the Energy and Resources group at the University of California at Berkeley and he holds a Ph.D in Environmental Policy from the University of the Aegean.

Dr. John Ehrenfeld retired in 2000 as Director of the MIT Program on Technology, Business, and Environment and then served until 2009 as Executive Director of the International Society for Industrial Ecology. He continues to teach, do research, and write. He was Visiting Professor at the Technical University of Delft during the 2000-2001 academic year. He is an editor of the Journal of Industrial Ecology. He holds a B.S. and Sc.D. in Chemical Engineering from MIT and is author of Sustainability by Design and co-author of Flourishing: A Frank Conversation About Sustainability  as well as the author of 200 papers, books, reports, and other publications. He spends his summers on the Maine coast and is an avid saltwater fly fisherman.