MIT is at it again. This time, researchers have developed something known as an "M-Block." Basically, they're tiny magnetic cubes that can move on their own and permanently stick together. In other words...they're the first step towards self-constructing robots.
.... Portable TENS gadgets have been produced for home use, but they still require dealing with the wires and pads that attach to your skin and that is an even bigger pain than the one in your back. So a smart company in Chattanooga, TN, Hollywog, has invented the first wireless TENS machine: the WiTouch.