Director and W.M. Keck Professor of Environmental Analysis at Pomona College, and author of "Public Lands, Public Debates: A Century of Controversy" (Oregon State University Press) and editor of "Cities and Nature in the American West" (University of Nevada Press). His new books for 2013 include "On the Edge: Water, Immigration, and Politics in the Southwest" (Trinity University Press), "Death Valley National Park: A History" (University of Nevada Press), and "Seeking the Greatest Good: The Conservation Legacy of Gifford Pinchot" (University of Pittsburgh Press).