The map creates new borders by finding the exact midpoint between any two airports.
http://www.wired.com/2014/05/a-wild-map-that-redraws-the-world-using-airport-locations/
The Continental United States
http://www.wired.com/2014/05/a-wild-map-that-redraws-the-world-using-airport-locations/
The Continental United States
