Jeroen van der Heijden is Professor and Chair in Regulatory Practice at the School of Government, Victoria University of Wellington and Honorary Professor at the School of Regulation and Global Governance, Australian National University. His research is concerned with innovations in urban climate governance in the global north and global south. Recent books include Innovations in Urban Climate Governance (Cambridge, 2017) and Governance for Urban Sustainability and Resilience (2014). He is a member of the International Editorial Advisory Board of the Journal of Environmental Policy and Planning. Harriet Bulkeley is Professor of Geography at the University of Durham. Her research is concerned with the nature and politics of environmental governance, and she has particular expertise in the areas of climate change, energy and urban sustainability. Recent books include Transnational Climate Change Governance (edited with Andonova, Betsill, Hoffmann, Newell, Paterson, Roger, and Vandeveer; Cambridge, 2014) and Cities and Climate Change (2012). She currently convenes the H2020 NATURVATION project examining urban innovation with nature based solutions for sustainable development. Chiara Certomà is Marie Skłodowska-Curie Research Fellow at Ghent University, Belgium and the Scuola Superiore di Studi Universitari e di Perfezionamento Sant'Anna. Her principal research topics include the politics of space and place, the effects of informal urban planning practices, and the role of new ICTs in urban sustainability governance. Recent books include Citizen Empowerment and Innovation in the Data-Rich City (edited with Dyer, Rizzi and Pocatilu, 2017) and Postenvironmentalism: A Material Semiotic Perspective on Living Spaces (2016).