These tiny Kilobots are not named for their heft. The ‘bots are roughly the size of a quarter and move about on tiny vibrating toothpick legs. Individually, they aren’t much to look at. But Kilobots aren’t supposed to be taken in individually--they’re designed to swarm in the thousands, and at $14 a pop they very well may be doing so soon.
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.