It’s Fun to Know: Shanghai ’s Mega-Metro System

With a population of 20 million, Shanghai is one of the largest cities in the world. In an effort keep pace with the needs of a growing number of commuters, the city’s metro rail system is expanding. Plans call for 316 miles of rail to be in place by 2012. That’s enough to connect Philadelphia to Boston, and three times the length of Chicago ’s "L." The estimated total cost is $11.7 billion.

(Source: Wired and Shanghai Daily)

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