The Caltech president, emeritus; life member of Caltech's Board of Trustees; and former secretary of the U.S. Department of Defense, passed away on January 4, 2019. He was 91 years old.
Alumnus and senior trustee Stephen A. Ross (BS '65), whose work helped shape the development of the field of financial economics, passed away on March 3, 2017. He was 73 years old.
Ahmed Zewail, the Linus Pauling Professor of Chemistry, professor of physics, and director of the Physical Biology Center for Ultrafast Science and Technology at Caltech, passed away on Tuesday, August 2, 2016. He was 70 years old.