September marks the 50th anniversary of the Global Positioning System, a U.S.-owned free utility that offers positioning, navigation, and timing services to users all over the world. It changed not ...

Fitness apps and the power of live satellite tracking have allowed runners, cyclists and others to draw hearts, animals, birthday wishes — and even homages to Vermeer — across their local landscapes.

Can GPS support a greener, more sustainable planet? The answer is an emphatic “yes,” and it is already doing so today. GPS has become a fundamental technology across nearly every sector of the U.S.