I know these statistical frighteners are a dime a dozen:
The year 2010 will likely be the first time in history that a majority of the world's people live in cities rather than in the countryside. Whereas less than 30 percent of the world's population was urban in 1950, according to UN projections, more than 70 percent will be by 2050. Lower-income countries in Asia and Africa are urbanizing especially rapidly, as agriculture becomes less labor intensive and as employment opportunities shift to the industrial and service sectors. Already, most of the world's urban agglomerations - Mumbai (population 20.l million), Mexico City (19.5 million), New Delhi (17 million), Shanghai (15.8 million), Calcutta (15.6 million), Karachi (13.1 million), Cairo (12.5 million), Manila (11.7 million), Lagos (10.6 million), Jakarta (9.7 million) - are found in low-income countries. Many of these countries have multiple cities with over one million residents each: Pakistan has eight, Mexico 12, and China more than 100.
Jack A. Goldstone, "The New Population Bomb," Foreign Affairs, Jan/Feb 2010, pp. 32-33, 38. via
If the urbanization of the planet is happening so rapidly, where is anyone offering any significantly improved model of the city, and of how to get there? Is there any coverage of this, other than on the local level? Oh wait, here's an old JSTOR article, three pages long. All three pages can be had for a mere $12...