George L CowgillGeorge L. Cowgill is Emeritus Professor of Anthropology in the School of Human Evolution and Social Change at Arizona State University. He is the director of the ASU-managed archaeological laboratory at Teotihuacan, Mexico. His work on Teotihuacan, athropological theory, and quantitative methods in archaeology has been published in numerous major peer-reviewed journals. He is co-author, with René Millon and R. Bruce Drewitt, of Urbanization at Teotihuacan, Mexico, Volume 1: The Teotihuacan Map, Part 2: Maps (1973) and co-editor, with Norman Yoffee, of The Collapse of Ancient States and Civilizations (1988). He was the keynote speaker at the fifth Round Table on Teotihuacan at the Instituto Nacional de Antropología e Historia in Mexico in 2011. Read More Read Less