Measuring microns: The quest to build a better GPS
GPS can guide you across town or across the country, navigating dusty backroads as easily as six-lane superhighways. But as anyone who’saccidentally driven into a lakecan tell you, GPS isn’t perfect. It can’t keep you in a specific lane, for example, or dodge nearby cars, or steer you down an exit ramp. That’s why John Deere built a better system. Yes,thatJohn Deere. You see, the GPS system most people know of was designed in the 1970s, and for what it is, it’s truly remarkable....