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'Star Trek' Stunt Warps Drones Into Urban Frontier

The "Star Trek" logo lights up the London skyline on March 23, 2013 to mark "Earth hour" and promote the upcoming film "Star Trek: Into Darkness."

World's most expensive cities to visit

A TripAdvisor survey has issued a list of the most expensive cities to

visit this summer. The numbers are based on the cost of drinks, a

two-course dinner, taxi rides and overnight stay at a four-star hotel.