We've said it before, but our favorite application for 3-D--really, the only venue in which we don't hate it--is gaming. Nintendo just released the 3DS XL, basically a bigger version of the glasses-free 3DS we reviewed here, and it's great. Here's why.
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.