Every GPS fix starts with satellites broadcasting the time, and your phone calculating distance at the speed of light. Four satellites give you a precise point on Earth, but even the tiniest timing ...

Oct. 1995 Level of Government: State Function: Disaster Management Problem/situation: When earthquakes or other disasters strike, it's difficult to give a location for features without addresses.

WEST LAFAYETTE, Ind. – A recent upgrade of the United States' global positioning system (GPS) will do little to assist farmers in their fields, says a Purdue University expert. Mark Morgan, assistant ...