Raymond Jeanloz is a professor of Earth and planetary science (EPS) and Astronomy at the University of California, Berkeley. Educated at the California Institute of Technology, Amherst College and at Deep Springs College, his research contributions have been fundamental to understanding of the composition of the Earth and the behavior of materials under high temperatures and pressures. Jeanloz has created tools and experiments that enable him to recreate and study deep interior conditions in a laboratory setting, He is working with colleagues to investigate the conditions inside supergiant exoplanets. Jeanloz has chaired the National Research Council Board on Earth Sciences and Resources. He is a co-editor of the Annual Review of Earth and Planetary Sciences and serves on the Board of Directors of Annual Reviews. Jeanloz is also active in connecting science and policy in areas including international policy, resources and the environment, and science education. He has been particularly prominent in informing national and international security and nuclear weapons policy, chairing the Committee on International Security and Arms Control at the National Academy of Sciences. In 2009 he received the Leo Szilard Lectureship Award from the American Physical Society for "contributions to development of sound public policy for nuclear weapons management and nuclear non-proliferation." Jeanloz became an Annenberg Distinguished Visiting Fellow at Stanford University's Hoover Institution in 2012.
Education Raymond Jeanloz is one of four children of Roger W. Jeanloz, a professor in biological chemistry and molecular pharmacology at Harvard Medical School, and his wife Dorothea. Raymond Jeanloz grew up in Massachusetts and spent two years at Deep Springs College, located in the Deep Springs Valley between the White Mountains and Inyo Mountains in California. His initial interests were in comparative literature and music. While he had some early exposure to geology, his interest in that field developed late in his undergraduate program. Having also tried Hampshire College and taken a "gap period" of several months, Jeanloz completed his B.A. in geology at Amherst College in Massachusetts in 1975. Jeanloz applied to the California Institute of Technology (Caltech) in part because of the Caltech Seismological Laboratory. His thesis advisor at Caltech was Thomas J. Ahrens. Jeanloz credits Ahrens and others for their mentorship and support, in helping him to learn about areas where he lacked scientific background and in encouraging him to explore new areas of research. In 1979, Jeanloz received his Ph.D. from Caltech for the thesis Physics of mantle and core minerals (1979).
Career Jeanloz joined the faculty at Harvard University in 1979, working at the intersection of materials science and physics. He taught there until 1981. In 1982, he moved to the University of California, Berkeley where he became a professor of Earth and planetary science and of Astronomy. Jeanloz is a member of the National Academy of Sciences. He advises the US Government, the University of California and its national laboratories on a wide variety of issues including national security. He has chaired the Committee on International Security and Arms Control, and has been recognized by the Federation of American Scientists and the American Physical Society for shaping government policy.
Research Jeanloz was an early researcher in mineral physics, and was one of those who proposed the field for recognition by the American Geophysical Union (AGU). His work has connected mineral physics, chemistry, and materials science.
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