Glenn T. Seaborg was an influential American chemist known for his work in nuclear chemistry and the discovery of several transuranium elements, including Plutonium and Americium. His research significantly advanced the understanding of the actinide series and contributed to the development of nuclear energy and weapons. Seaborg's contributions earned him the Nobel Prize in Chemistry in 1951, and he played a key role in the establishment of the Lawrence Berkeley National Laboratory. Beyond his scientific achievements, he served as the chairman of the Atomic Energy Commission, influencing U.S. nuclear policy during a critical period in history.