Robots with legs are getting ready to walk among us

Earlier this month, a company named Agility Robotics unveiled its first ever robot: a bipedal creation named Cassie that looks like a headless, wingless ostrich. Cassie has reverse knees, motor-powered ankles, and can walk over different sorts of terrain at a decent clip. It can even survive a kick to the abdomen (the fastest way to test a robot’s self-balancing capabilities, though not the kindest). But are bipedal robots like Cassie really the future? Why not use wheels, tracks, or just