MABEL the running robot has been training hard, grabbing the title of "fastest bipedal robot with knees." Like any great sports star, it's been plagued by many dream-crushing obstacles and injuries, but this time it's done it: running at a speed of 6.8 miles per hour on a track. Jessy Grizzle, professor at the University of Michigan's Department of Electrical Engineering and Computer Science, attributes this bot's success to its human-like weight distribution -- a heavier torso and flexible legs with springs similar to tendons for movement "like a real runner." This bipedal technology, which can mimic a hu
