- Glenn T(heodor),1912–1999, U.S. chemist: chairman of the Atomic Energy Commission 1961–71; Nobel prize 1951.
- Glenn Theodore. 1912–99, US chemist and nuclear physicist. With E.M. McMillan, he discovered several transuranic elements, including plutonium (1940), curium, and americium (1944), and shared a Nobel prize for chemistry 1951
- American chemist who led the team that discovered the element plutonium in 1941. In 1944 they discovered americium and curium, and by bombarding these two elements with alpha rays, Seaborg produced the elements berkelium and californium. In 1951 Seaborg shared the Nobel Prize for chemistry with American atomic scientist Edwin McMillan, who had predicted the existence of plutonium in 1939.