It ain’t what it used to be:
The Federal Aviation Administration required the runway designation change (at Tampa International Airport) to account for what a National Geographic News report described as a gradual shift of the Earth’s magnetic pole at nearly 40 miles a year toward Russia because of magnetic changes in the core of the planet.
For the non-aviators in the crowd, airport runways are painted on the approach with an abbreviated magnetic heading. Thus, a runway oriented to the west (270 degrees magnetic) would be called Runway 27. Only now, it will be called runway 28 at Tampa International. Because the Earth’s magnetic pole is moving at 40 MPH miles per year (oops). Towards Russia.
Which, for some surprising reason, wigs me out just a little.
It was only today that I learned that the Earth’s magnetic field has on occasion actually flipped. I’m not sure I wanted to know that could happen.