Three experimental robots, each about the size of a shoebox, are being used to search for victims in the mountain of rubble that was once the World Trade Center in New York City. Researcher Robin Murphy and three of her graduate students have been clambering over the jagged piles of debris powdered concrete and twisted steel with the camera-carrying robots, lowering them into voids that are inaccessible to people, dogs, and other cameras involved in the search for bodies. "So far the robots haven't found a survivor," said engineering professor Robin Murphy of the University of South Florida, who is developing the robots specifically for urban search and rescue missions. "We've only seen body parts and bloody splotches," said Murphy. "At this point we don't have much hope. We are trying to find remains so that they can be handled with dignity."