In Hiroshima, Nobel Prize brings survivors hope, sense of duty

FILE - Kazumi Matsui, right, mayor of Hiroshima, bows at Hiroshima Memorial Cenotaph at the Hiroshima Peace Memorial Park in Hiroshima, western Japan, Aug. 6, 2015. FILE - This 1945 photo shows a view of the devastation after the atom bomb was dropped in Hiroshima, Japan.

Almost eight decades after an atomic bomb devastated her hometown of Hiroshima, Teruko Yahata carries the scar on her forehead from when she was knocked over by the force of the blast.