Manuel Castells is Professor of City and Regional Planning and Professor of Sociology. Born in Spain in 1942, he studied law, economics and sociology at the Universities of Barcelona and Paris. Obtained his Ph.D. in Sociology from the Sorbonne in 1967, with a dissertation on patterns of industrial location in the Paris Region. Before being appointed in Berkeley he was professor of urban sociology at the School for Advanced Social Studies, University of Paris. He has been a visiting professor at many universities and has also lectured in over one hundred academic and professional institutions in 35 countries. He has published 20 books, and about 200 academic/professional articles, in several languages. His last book The Information Age: Economy, Society, and Culture, published by Blackwell in 3 volumes in 1996-97, is an empirical, cross cultural analysis of the economic, spatial, and social impacts of the information technology revolution.