This is extremely impressive. It can multiply, divide, trigonometrize, figure roots, graph quadratic functions, and everything else you always need to do when you're playing a video game. All the calculations are done by blocks.
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.