Call it job creation: this week a handful of sea lions and dolphins trained to locate undersea mines earned their jobs back, jobs that were supposed to be turned over to undersea mine-sweeping robots. And why were these seafaring mammals brought back into service? To find the very robots that were supposed to replace them, four of which have gone AWOL somewhere off the coast of Virginia. You can’t make this stuff up.
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.