Some seizures briefly incapacitate, while other seizures can be deadly. Knowing the difference is obviously of grave importance, but figuring out which is which is difficult. So a team of MIT Media Lab researchers have developed a wristband that can tell the difference between the more benign breed of seizure and the one that might kill you, and may even be able to predict seizures before they strike.
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.