Sudhir Venkatesh is William B. Ransford Professor of Sociology at Columbia University in the City of New York. He is a researcher and writer on urban neighborhoods in the United States (New York, Chicago) and Paris, France. He is also a documentary film-maker. His most recent book is Gang Leader for a Day. In 2006 he also published Off the Books: The Underground Economy of the Urban Poor about illegal economies in Chicago. Off the Books received a Best Book Award from Slate.Com (2006) as well as the C. Wright Mills Award (2007). His first book, American Project: The Rise and Fall of a Modern Ghetto (2000) explored life in Chicago public housing. He received his Ph.D. in Sociology from the University of Chicago. He was a Junior Fellow at the Society of Fellows, Harvard University from 1996-1999. He is currently Director of the Center for Urban Research and Policy, and Director of the Charles H. Revson Fellowship Program, both at Columbia University.
William Julius Wilson, an American sociologist, received his Ph.D. from Washington State University in 1966 and teaches at the University of Chicago. His scholarly work, written from both historical and sociological perspectives, has concentrated on the condition of African Americans living in inner cities, especially the underclass. He stresses urban divisions separating the middle class from the poor.