Contributors extend Saskia Sassen's global cities thesis to consider the information architecture binding global cities together in dense networks. They look at global cities in the South, including Shanghai, Mexico City, Beirut, and Buenos Aires, which are becoming key nodes in the emerging global urban system. Discussion encompasses firms and their global service networks, global capital exchange, and sociospatial impacts of the development of global city functions. Sassen teaches sociology at the University of Chicago. Annotation c. Book News, Inc., Portland, OR (booknews.com)