If any of you weren't glued to your livecasts over the weekend, you should know that the first ever robot marathon has come to an end. In a near-photo-finish, the "I Love Osaka" bot crossed the finish line inches ahead of the second-placer, while the crowd roared and a straggler in the race stumbled and pounded the floor in frustration.
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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.