This GPS-Based Plane Tracker Makes Highways in the Sky

At bustling traffic hubs like O'Hare International, planes can spend an interminably long time waiting for their turn to land. And at airports like Rio de Janeiro–Galeão International, pilots must contend with tight flight paths to avoid crowded population centers and hills on their final approach. But thanks to a new… » 9/11/13 11:39am 9/11/13 11:39am