Columbia with the Department of Geography and the School of Public Policy and Global Affairs. He holds an MBA (Paris 1) and PhD (Oxford). Working on linkages between environment, development and security, he has published widely on natural resource governance and investigates socio-environmental relations and commodity networks linking spaces of exploitation, consumption and regulation. Sam Spiegel is Senior Lecturer and ESRC Future Research Leader Fellow at the University of Edinburgh with the School of Social and Political Science. He holds an MSc (UBC) and PhD (Cambridge). Working on conceptual and methodological debates in development studies, he has published widely on social marginalization and collective mobilization in mining regions and the framing of social justice debates.