Table of Contents: Overview, by James L. Garrett; An urbanizing world, by Martin Brockerhoff; Rural-urban interdependence, by Cecilia Tacoli; Urbanizing livelihoods and labor markets, by Arjan De Haan; Feeding the cities: food supply and distribution, by Olivio Argenti; The hidden significance of urban agriculture, by Luc J.A. Mougeot; Urbanization and the nutrition transition, by Barry M. Popkin; Urban women: balancing work and childcare, by Partrice L. Engle; Threats to urban health, by Carolyn Stephens; Programming for urban food and nutrition security, by Timothy R. Frankenberger, James L. Garrett, and Jeannie Downen;