Unmanned Aerial Vehicles, or drones, are being used more and more by the U.S. military overseas. The planes, flown with no human pilot on board, appear to be headed for more widespread use domestically as well. There may be a problem, however. The University of Texas was able to hack into a drone and take control of it, using a technique called spoofing. Plus, in the Robot Roundup: Robots winning at Rock, Paper, Scissors; robots as waiters; and robots working retail.