Three engineering students developed a pair of "anti-rape" undies that fend off would-be attackers with an electric shock, and in a discovery that could be a game-changer for environmentally conscious parents, scientists have figured out a way to make super-absorbent diapers from carbon dioxide.
ENGADGET: Inhabitat's Week in Green: stair-climbing vacuum cleaner, carbon dioxide diapers and a real 3D-printed face