Paul Robbins is professor of Geography at the University of Arizona and is known for his interdisciplinary views of how geography interrelates with other disciplines. He has written and edited several books including the best selling textbook "Political Ecology: A Critical Introduction" (Blackwell 2004) and the recent "Lawn People: How Grasses Weeds and Chemicals Make Us Who We Are" (Temple University Press 2007).
Michael Watts is Class of 1963 Professor of Geography and Development Studies at the University of California, Berkeley. He is coeditor of Violent Environments , also from Cornell, author most recently of Curse of the Black Gold , and coauthor of Afflicted Powers .