Everyone's favorite headless bipedal bot is back, just in time for Halloween. Petman won't be riding any horses around Sleepy Hollow, though - just showing off his moves on a treadmill. Boston Dynamics is developing Petman to test chemical protection clothing for the U.S. Army, and if he's joining the army, obviously he needs to get in shape.
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.