Alf Hornborg is Professor of Human Ecology at Lund University since 1993. He received his Ph.D. in Cultural Anthropology from the University of Uppsala in 1986 and has taught at Uppsala and at the University of Gothenburg. He has done field research in Peru, Nova Scotia, the Kingdom of Tonga, and Brazil. His primary research interest is the cultural and political dimensions of human-environmental relations in past and present societies, particularly from the perspective of world-system analysis. This has led him to explore various perspectives not only from anthropology but also from trans-disciplinary fields such as environmental history, ecological economics, political ecology, and development studies. The central ambition has been to examine how specific cultural assumptions constrain human approaches to economics, technology, and ecology, and how such assumptions tend to serve as ideologies that reproduce social relations of power.