Sergio Vilamayor-Tomas is an environmental social scientist trained in political science (Master’s in Public Policy at Sciences Po Paris), and in institutional and ecological economics (PhD Environmental Policy and Management, at the Ostrom Workshop in Political Theory and Policy Analysis, Indiana University). He has held positions at Humboldt University and the Swiss Federal Institute for Forest Snow and Landscape Research (WSL-ETH). Currently he is Ramon y Cajal researcher at the Institute of Environmental Science and Technology (ICTA), Autonomous University of Barcelona (UAB). His research interests revolve around collective action theory and its application to the study of community-based natural resource management, conservation instruments, climate change adaptation and environmental justice movements. He has carried field research in the Global South (Mexico and Colombia) and North (Spain, Germany, Switzerland, and the US), and combined quantitative and qualitative methods, including economic and choice experiments, large-n survey research, qualitative comparative analysis and qualitative meta-analyses. Roldan Muradian holds a PhD in ecological economics from the Autonomous University of Barcelona. He works currently at the Faculty or Economics of the Universidade Federal Fluminense, in Rio de Janeiro, Brazil. He has worked at the universities of Tilburg and Nijmegen (the Netherlands). During the period 2022–2023 he will be the President of the International Society for Ecological Economics. His research interests include a wide range of issues, including environmental governance, global value chains and human-nature relations.