ADVANCE FOR SUNDAY, APRIL 22, 201 - In this April 15, 1935 file photo, a peaceful little ranch in Boise City, Oklahoma where the top soil was being dried and blown away, is about to be engulfed in a gigantic dust cloud. Award winning filmmaker Ken Burns is turning his lens toward the Oklahoma Panhandle for a new four-hour documentary on the Dust Bowl and its impact on the region. (AP Photo)