Explosives detection is a hot place for progressive science right now. One Colorado State researcher is breeding plants that change colors when certain molecules come in contact with them, and others are modeling chemical sensors on everything from butterfly wings to frog eggs. Now MIT may have trumped them all with a carbon nanotube and bee venom-based sensor that can detect explosives at the highest resolution: a single molecule.
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.