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Because air traffic controllers are now monitoring departing aircraft with GPS-based systems rather than radar, the planes follow much more precise and predictable paths—some straight ahead, others instead banking several degrees to the left or right.

This more accurate tracking lets controllers release more planes for takeoff into the same airspace while maintaining the required separation distance of 3 horizontal miles and 1,000 vertical feet.

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None of them is monumental in scale, like the seven wonders of classical antiquity chronicled by Antipater of Sidon more than 2,000 years ago.The Great Pyramids of Giza and the Statue of Zeus at Olympia were feats of engineering, triumphs of man over nature and gravity, and above all accomplishments of ego and raw power.And the modern, man-made wonders we marvel at—the Brooklyn Bridge, the Hoover Dam, the Panama Canal—are echoes of the ancient ones: breathtaking physical manifestations of human ingenuity.In recent years, the airport has expanded its flight capacity slightly, but not by increasing the number of runways.Watch the planes take off, and you might see a more subtle innovation.

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