Hitoshi Yoshioka, a leading figure in the move to phase out the use of nuclear power in Japan, died Jan. 14 of a hepatic neuroendocrine tumor. He was 64.
A Kyushu University professor specializing in the history and sociology of science, Yoshioka completed his graduate studies at the University of Tokyo. He worked on scientific verification of nuclear energy policy while holding positions as associate professor at Wakayama University and later the vice president of Kyushu University.
Following his involvement in the government's investigative committee on the Fukushima nuclear disaster that broke out in 2011, Yoshioka became the chairman of the Citizens' Commission on Nuclear Energy, and led the fight to stop the use of nuclear power.