KC Sivaramakrishnan of the Centre for Policy Research in Delhi, Rahul Mehrotra, Architect and Professor at MIT, Enrique Norten, Architect, TEN Arquitectos, Barun Kumar Ray, Secretary of Kolkata Metropolitan Development Authority, and Mauricio Camps, Special Advisor of International Relations to Mayor Marcelo Ebrard of Mexico City, discuss "How Cities are Planned" at the Urban Age India conference in Mumbai, 2-3 November 2007.