Multitouch screens are being integrated into surfaces all around us; not just our computer monitors, but our walls, our tables, our countertops -- pretty much any surface that is somewhat flat. So why not take advantage of the vast amount of flat workspace going un-utilized beneath our feet? So goes the thinking behind Multitoe, a floor-based interface that users control with their feet.
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.