In this Thursday, Nov. 21, 2013 photo, Abhinav Gupta stands near one of the computer clusters used in his research at one of the computer server areas on campus at Carnegie Mellon University in Pittsburgh. The school is letting hundreds of computers run constantly to scan millions of images off the Internet, and have the computers make connections on their own. The plan is to let the system run forever. (AP Photo/Keith Srakocic)