Sunao Tsuboi, a survivor of the Hiroshima atomic bombing who made opposing nuclear weapons the message of his life, has died. He was 96. Tsuboi died Oct. 24 in a hospital in Hiroshima, Japan. The cause of death was given as an irregular heartbeat caused by anemia, Nihon Hidankyo, the nationwide group of atomic bomb survivors he headed until his death, said. He was 20 years old when he miraculously survived the U.S. atomic bombing of his hometown on Aug. 6, 1945, in the closing days of World War II. He suffered such serious burns a part of his ear was gone. When he emerged from unconsciousness 40 days after the bombing, the war was over. Tsuboi made a point to stress what happened in Hiroshima was horrible. As a junior high teacher, Tsuboi was so intent on educating youngsters about anti-nuclear proliferation his nickname became “pikadon sensei,” combining the “flash-boom” onomatopoeia Japanese use to describe the bomb and the word for “teacher.” “Never give up” was his trademark phrase, especially for his fight for a world without nuclear weapons. Tap the link in bio toe learn more about Tsuboi.