Raúl Acosta is an anthropologist at the Institute of Social and Cultural Anthropology of the Goethe University Frankfurt in Germany. He obtained his doctorate at the University of Oxford. He is author of Civil Becomings: Performative Politics in the Amazon and the Mediterranean (The University of Alabama Press, 2020), along with several articles and book chapters. His research interests are novel forms of political engagement, environmental governance, urban anthropology and sociocultural diversity.

Lukas Ley is an environmental and urban anthropologist working at the Max Planck Institute for Social Anthropology in Halle, Germany, where he leads a DFG-funded Emmy Noether research group on the infrastructural lives of sand in the Indian Ocean world (www.s-and.org). His research is broadly concerned with marginalization, temporality and the material environment within urban landscapes. Current research projects investigate the role of sand in building urban commons and dispossession in Denpasar, Indonesia, and the future of concrete in Marseille, France. Ley’s first book, Building on Borrowed Time: Rising Seas and Failing Infrastructure in Semarang (University of Minnesota Press, 2021), was awarded the Social Science Prize by European Association for Southeast Asian Studies and received an Honorable Mention for the Harry J. Benda Prize of the Association for Asian Studies.