10. By 2025, China will build TEN New York-sized cities.
The scale and pace of China's urbanization promises to continue at an unprecedented rate. If current trends hold, China's urban population will expand from 572 million in 2005 to 926 million in 2025 and hit the one billion mark by 2030. In 20 years,China's cities will have added 350 million people—more than the entire population of the United States today. By 2025, China will have 219 cities with more than one million inhabitants—compared with 35 in Europe today—and 24 cities with more than five million people. Also, 40 billion square meters of floor space will be built - in five million buildings. 50,000 of these buildings could be skyscrapers - the equivalent of ten New York Cities.