3-D scanning shouldn't be limited to expensive equipment in labs. Developers have started to use increasingly powerful consumer electronics to do what just a few years ago was well out of the reach of consumers. Grant Schindler's Trimensional app for the iPhone 4 is one of those--and it just got an update to allow it to export your 3-D facial scans to 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.