The Freakonomics blog at The New York Times recently put together a panel of experts and asked them to outline the implications of our increasingly urban world.
"Urbanization has been climbing steadily of late, with more than half of the world's population now living in cities. Given the economic, sociological, political, and environmental ramifications, how should we be thinking about this? We gathered a quorum of smart thinkers on this subject - James Howard Kunstler, Edward Glaeser, Robert Bruegmann, Dolores Hayden, and Alan Berube - and posed to them the following questions:"
"This year marked the first time in human history that more people lived in cities than in rural areas. What problems and opportunities does this present? What effects has it had on our local and global culture? Economy? Health?"