In August 1945, the U.S. dropped atom bombs on Hiroshima and Nagasaki. Now, as Japan and the rest of the world prepare to mark seven decades since the end of World War II in the Pacific, new evidence has emerged about the Japanese military's own secret program to build a nuclear weapon.
A retired professor at the state-run Kyoto University recently discovered a blueprint at the school's former Radioisotope Research lab, Japan's Sankei newspaper and other local media reported recently.
The notebooks were related to research work by Bunsaku Arakatsu, a professor at the university whom Sankei said was asked by the Japanese navy to develop an atomic bomb during the war.