Richard Allan Livingston ’68 died on December 6, 2025, in his sleep at his apartment in Laguna Woods, California. Rich grew up in Haworth, New Jersey, and in high school was a National Merit Scholarship finalist, class president, member of the fencing and football teams, and participated in glee club and drama. At Dartmouth he was captain of the fencing team, coeditor of Greensleeves magazine, and a member of the Dartmouth Society of Engineers and Tau Epsilon Phi. He received an A.B. in medieval history in 1968 and a B.E. from Thayer in 1969. After Dartmouth Rich earned his master’s in nuclear engineering at Stanford University in 1970. He was awarded an internship in Washington, D.C., with the U.S. Atomic Energy Commission (AEC). Once there, Rich developed a bad case of “Potomac fever” and never went back to Stanford. He spent his career in the D.C. area with the AEC and the U.S. Environmental Protection Agency and received a Ph.D. in geochemistry at the University of Maryland in 1990. He later worked in advanced research at the Federal Highway Administration. Rich retired in 2007 but continued to teach and conduct research at Maryland and Columbia. Rich moved to a retirement community in Laguna Woods, California, in September 2024 and had heart bypass surgery in June 2025. He is survived by sister Nancy and was predeceased by siblings Robert ’70 and Barbara.