Were you suckered into buying an extended warranty on a tech purchase this past holiday season? Take a closer read of the fine print, because you're not as covered as you might think. Scratches? Not a chance. A power surge? If you're lucky. Nuclear holocaust? Nope. But, more on that later.
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.