Okay, so the entire article is interesting, but what fascinated me most was this factoid in this opening paragraph (emphasis added):

‘China has in the past 30 years become the most urbanized country that has ever existed. More than 450 million Chinese — 1 in 25 people on the planet – live in cities. At least 160 Chinese cities have more than 1 million people, compared to nine in the United States. In a decade, the Chinese government plans to resettle 250 million people into new or existing urban areas.’ (Wired).