Trackpads have been a remarkably simple solution to what could've been a complicated problem: translating the mouse to a laptop. But pushing that technology any further requires some lateral thinking, and the next dimension laptops might venture into is detecting pressure from your fingers, which would open the door for a larger set of commands. It would change how we navigate, and we might be almost there.
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.