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Runway Closes for Realignment with Magnetic North Pole
Because the earth’s magnetic north pole is shifting, changes must be made to airports runways. Changes in the Earth’s magnetic core are causing the magnetic north pole to shift about 40 miles each year, according to a 2009 National Geographic article. And that means any structure that is built along a magnetic heading — like a runway — will eventually have to change to match the changes in the magnetic north pole.