Sure, the elves in this video look happy, but are they secretly worried about job security? They should be. GM reprogrammed a few robots in its line to wrap gifts, and this will likely not bode well for some of the little guys.
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.