gps

“Once you realize how deep it is in all of our infrastructure, you start to see both how transformative it was and also really how risky it is,” said Katherine Dunn, author of “Little Blue Dot: How GPS Shaped the Modern World.”

Christopher Mims, a technology columnist for the Wall Street Journal, talks about the rise in GPS dead zones and what alternatives there are to GPS.

Christina Guidi of The Aerospace Corporation discusses what it would take to build structures and infrastructure that could help a lunar economy lift off.

But so far they’ve only added GPS tracking to less than 1% of the nation’s railcars.

The Asian giant will soon launch the last location-tracking satellite for a system that has economic, communications and military applications.

Older equipment may lose its grip on space and time when its clocks roll over.

The popular mobile phone game is making a comeback.

The $30 gadgets are meant to solve 'tunnel blindness' and prevent accidents.

About 200 people are killed at track crossings each year.

Playing it safe.