Urbanization and what lies ahead for China

China's new urbanization plan calls for 60 percent of the total population to be moved by 2020, and formidable challenges lie ahead as the world's most-populous country undertakes the biggest human migration in history. If the population figures of Portugal and Sweden were added together, Shanghai's population would still be bigger. Shanghai, the largest city in the world by population, and two other Chinese cities - Beijing and Guangzhou - are among the top 10 most-populous cities in the world. Read more