Just read an interesting fact in an article about Chinese megacities over at Foreign Policy.
In Britain, the birthplace of the Industrial Revolution, there are only two cities with a population of more than 1 million; in the United States, there are just 10 such cities. But already in China, there are 43 cities of more than 1 million, and by 2030 there will be 221, the McKinsey Global Institute predicts.
Wow.