Mark SullivanSenior Editor, TechHive

Mark has been writing about networks - social and wireless - since 2005. Independent and outgoing, he enjoys travelling, wine, and skiing. His favorite book is "Atlas Shrugged" by Ayn Rand.

A brief history of GPS

The government-run satellite navigation system has revolutionized industry after industry and breathed new life into consumer technology. Here’s how we got here.