distinguished themselves in a wide range of endeavors and include 114 Nobel laureates (35 alumni), 25 Turing Award winners (11 alumni), 14 Fields Medalists, 30 Wolf Prize winners, 108 MacArthur Fellows (65 alumni) , 30 Pulitzer Prize recipients, 19 Academy Award winners, five foreign heads of state, chief justices of the United States and California, 22 cabinet members, ten state governors, numerous members of Congress, 36 general and flag officers of the United States Armed Forces, 40 billionaires, and the founders or co-founders of many world-renowned companies. Faculty and staff Shiing-Shen Chern, a leading geometer of the 20th century, co-founded the renowned Mathematical Sciences Research Institute and served as its founding Director until 1984. Physicist J. Robert Oppenheimer was scientific director of the Manhattan Project and was the founder of the Berkeley Center for Theoretical Physics. Faculty member Edward Teller was (together with Stanislaw Ulam) the "father of the hydrogen bomb", who laid important foundations for the establishment of Space Sciences Laboratory at Berkeley. Ernest Lawrence, a Nobel laureate in physics who invented the cyclotron at Berkeley, and founded the Radiation Laboratory on campus, which later became the Lawrence Berkeley National Laboratory. Gilbert N. Lewis, former Dean of the College of Chemistry, was nominated 41 times for Nobel Prize in Chemistry. He mentored and influenced numerous Berkeley Nobel laureates, including Harold Urey (1934 Nobel Prize), William F. Giauque (1949 Nobel Prize), Glenn T. Seaborg (1951 Nobel Prize), Willard Libby (1960 Nobel Prize), and Melvin Calvin (1961 Nobel Prize). Glenn T. Seaborg, a Nobel laureate in chemistry who discovered or co-discovered 10 chemical elements at Berkeley and served as Chancellor from 1958 to 1961. Hans Albert Einstein, the first son of Albert Einstein and a world's leading scholar in hydraulic engineering, was a long-time faculty member at Berkeley. Steven Chu (PhD 1976), the 12th United States Secretary of Energy and Nobel laureate in physics, was Director of Berkeley Lab from 2004 to 2009. Janet Yellen, 78th United States Secretary of Treasury and the 15th Chair of the Federal Reserve, is a professor emeritus at Berkeley Haas School of Business and the Department of Economics. Alumni Berkeley alumni have served in a range of prominent government offices, both domestic and foreign, including Chief Justice of the United States Supreme Court (Earl Warren, BA, JD); United States Attorney General (Edwin Meese III, JD); United States Secretary of State (Dean Rusk, LLB); United States