What’s not to like about some good old fashioned robot-on-robot violence? The 17th annual Robo-One competition just wrapped in Kawasaki City, Japan, and its YouTube channel is packed with vids of the important matches that shaped this year's robo-wrestling throwdown. The drama was high, the action raw, and in the end Super Dygar II beat Neutrino (and the 36 ‘bots it faced previously) to take home first prize.
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.