"City Information" Quiz

Today our eye is on AOL's "City Information" quiz, inspired by the Worldwatch Institute's State of the World 2007: Our Urban Future. Test your knowledge of the world's biggest, greatest, and riskiest urban centers now!

This story was produced by Eye on Earth, a joint project of the Worldwatch Institute and the blue moon fund. View the complete archive of Eye on Earth stories, or contact Staff Writer Alana Herro at aherro [AT] worldwatch [DOT] org with your questions, comments, and story ideas.