Manuel Castells is Professor of Communication and the Wallis Annenberg Chair in Communication Technology and Society at the Annenberg School for Communication, University of Southern California, as well as Professor Emeritus of Sociology and Planning at the University of California, Berkeley, Research Professor at the Open University of Catalonia, and Marvin and Joanne Grossman Distinguished Visiting Professor of Technology and Society at MIT. He is the author of, among other books, the three-volume work The Information Age: Economy, Society, and Culture.