He is co-editor of the Journal of Environmental Economics and Management and on the editorial council of the new journal, Journal of the Association of Environmental and Resource Economists (JAERE). He earned his bachelor’s and master’s degrees in agricultural engineering from the Universities of Göttingen and Bonn respectively. He received a second master and a PhD in agricultural and resource economics from the University of California, Berkeley, where he was a recipient of a National Science Foundation (NSF) grant, as well as a grant from the Institute on Global Conflict and Cooperation (IGCC). He was a visiting professor at Resources for the Future, as well as at LMU Munich, University of Cologne and at IZA, Bonn.