Multitouch screens, which can register more than one finger-press at a time, will let computers trade keyboards and mice for simple strokes and pinches. The models shown here are just the start. Nearly every major PC maker will introduce touch-y designs of various shapes and sizes in the coming months.
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.