Did you ever take those photo-booth images in a mall or theme park, the ones that came out in a multi-panel strip? Well, welcome to the future of that. A new exhibit in Japan will be offering "portraits" made with a 3-D printer.
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.