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"        Every night, a flock of airliners departs the United States Eastern Seaboard. Thanks to the time zone change and the air currents, they&amp;#039;ll arrive in cities across Europe the next morning. But while you might have taken a redeye over the Atlantic before, you may not have considered just how complicated it is to keep everybody safe and on time. Sky highways are the key. With the video above, the excellent YouTube channel Wendover productions explains how these pre-designated paths take planes safely from New York to London every day. The problem at hand is that there is a preferred shortest route from the U.S. east coast to Europe. Because of the curvature of the Earth, it carries planes in an arc over the North Atlantic. All the planes flying to Europe want to follow this basic path, and if possible, they want to slip into the jet stream to fly faster and use less fuel.  That&amp;#039;s a lot of aircraft to organize. It&amp;#039;s especially tricky because planes fly beyond the reach of radar in the vast expanse of open ocean. So air traffic control has set up a way to establish particular highways in the sky and guide airlines to the best one. Watch the video for the full explanation. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/flight/news/a22836/airline-sky-highways/>