By | January 15 2013 11:52 AM

Beijing is already one of the world’s most important cities, with its 20 million inhabitants and its role as the capital of a rising power and second-biggest economy in the world. But it lacks one thing when compared to its fellow mega-metropolises like New York, Paris, Tokyo and London: It has only one airport. Even second-tier global cities like Milan, Seoul and Moscow have multiple airports, and so does Beijing’s rival as top Chinese city, Shanghai.