Ananya Roy is Assistant Professor in the Department of City and Regional Planning at the University of California at Berkeley. Nezar AlSayyad is Chair of the Center for Middle Eastern Studies and Professor of Architecture and Planning at the University of California at Berkeley. He is the author or editor of eight books, including Muslim Europe or Euro-Islam: Politics, Culture, and Citizenship in the Age of Globalization (Lexington Books, 2002).

The spread of urban informality is the most significant trend shaping the space and time of our 21st century world. This book is the finest collection of scholarly essays I know on this phenomenon. It should be mandatory reading for courses on urbanization and on development studies.