Roving robots explore moon, desert

Whether it's exploring the moon's craters or the inhospitable Chilean desert, robots are aiding in the research work that humans wouldn't ordinarily be able to do. At a recent visit to Carnegie Mellon University's Robotics Institute in Pittsburgh, CNET News.com's Kara Tsuboi gets up close and personal with the Scarab, Zoe, and an entry into the Lunar X Prize Challenge.