Humans have invented all kinds of high-tech fixes to deal with plaque in the heart, but when it comes to battling tooth decay, a manual scrubbing with a bristle-brush is still our primary line of defense. But Dutch researchers may have just bested the toothbrush by characterizing and deciphering the structure of the enzyme responsible for plaque sticking to teeth. By adding an inhibitor to toothpaste or even to the food we eat, tooth decay and cavities could soon become a rarity.
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.