A 'Roomba' for weeds

The inventor of the Roomba robot vacuum, Joe Jones, has come up with something new: a solar-powered weeding robot called the Tertill. It will patrol your home garden daily looking for weeds to cut down.

How does it know what's a weed and what's a plant?

Tertill has a very simple method: weeds are short, plants are tall. A plant tall enough to touch the front of Tertill's shell activates a sensor that makes the robot turn away. A plant short enough to pass under Tertills shell, though, activates a different sensor that turns on the weed cutter.

Get your own weed-killing robot for $249 through the Tertill's Kickstarter.

(Business Insider)