City in the Sky

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What does it take to keep a million people airborne at 30,000 feet across the globe?

At any one time, there are a million people airborne somewhere in the world. That equates to an entire airborne city - a city in the sky. So what does it take to run a "city" at 30,000 feet? In this series, we set off around the world to uncover the invisible global networks and complex logistics that make it all possible.

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Providing Support for PBS.org

More About the Show

At any one time, there are a million people airborne somewhere in the world. That equates to an entire airborne city — a city in the sky. This is a metropolis unlike any other: it is a city that straddles not just countries but whole continents. The fabric of this extraordinary constructions is made up of the 100,000 flights that crisscross the world every single day. So what does it take to run this ‘city’ at 30,000 feet? 

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