Robert James Murrell, Jr., who has been homeless off and on for five years, reads a newspaper on Tuesday, Dec. 27, 1994 in Washington as a pedestrian passes by Murrell sits on a grate down the street from the State Department, in background, to keep warm. Some 13.5 million American adults have experienced homelessness at least once and another 12.5 million have stayed off the street only by moving in with friends or family, a Columbia University study contends. (AP Photo/Marcy Nighswander)