In milestone year, A-bomb survivor Terumi Tanaka keeps up fight for nuclear disarmament

Terumi Tanaka was 13 when a U.S. warplane dropped a plutonium bomb on the southern Japanese city of Nagasaki, on Aug. 9, 1945. Sitting at home with a book that morning, Tanaka knew instantly when his surroundings turned a blinding bright white that the massive boom was not one of the air raids he had gotten accustomed to in the waning days of World War Two.