Long served on the President's Science Advisory Committee for Dwight D. Eisenhower, John F. Kennedy and Lyndon B. Johnson.[1][2][3] He also was assistant director of the United States Arms Control and Disarmament Agency,[1] chairman of the chemistry department at Cornell University,[1][2] a member of the National Academy of Sciences,[2] a recipient of Dongbaeg Medal,[2] the Charles Lathrop Parsons Award from the American Chemical Society,[4] Henry Luce Professor of Science and Society,[1] a member and vice president of the American Academy of Arts and Sciences.[2] He also was in charge of the Cornell University's program on science, technology and society, as well as of its peace studies program.[1]