Robot lawn mowers are pricey, but they take all the effort out of perfect lawn care.

A robot mower will keep a lawn cut to a consistent height without you touching it, but the right model depends almost entirely on one decision: how it knows where the edge of your lawn is. The three ...

Even though GPS makes it possible for us to easily navigate around the planet in almost any vehicle we’d like, whether that’s a passenger vehicle, airplane, or cargo ship, it’s not really suitable for ...