Autonomous cars and military ‘bots find their way by using lasers to make virtual maps of terrain. Neato Robotics’s XV-11 applies the same tactic to your messy living room. The robotic vacuum uses smaller, cheaper lasers to scope out a space and plot the quickest path to cover it. So instead of wandering randomly and bouncing off objects, like other robot maids, it can devote its battery to actual vacuuming.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.