Behold the xenobots – part frog, part robot. But are they alive?

They're being called the world's first "living robots." But what, exactly, does that mean? Designed by a supercomputer, xenobots can move toward a target, form a group to push pellets to a central location, and self-repair. But they're made entirely from frog stem cells. But for now, these biological blobs are little more than a proof of concept.