Cities Nature Justice is a 3-day international symposium addressing the social science and science of sustainability. A key question for conference attendees will be: Can social sustainability be achieved at the same time as environmental sustainability? Building on the success of the Landscapes of Meaning symposium hosted in October 2006, Cities Nature Justice will similarly bring together environmental activists, advocates and communicators from India, China, South East Asia, Australia and the United States to discuss new approaches to understanding city environmental issues by bringing both social science and science to bear on key questions of public space, water and social justice.