Art Rosenfeld, a globally recognized pioneer of energy efficiency died at his home in Berkeley, California on January 27, 2017 at the age of 90. Said to have been Enrico Fermi’s last graduate student, Dr. Rosenfeld started his career in particle physics. During the 1973 OPEC oil shock, he began shifting his attention to energy efficiency, later founding the Center for Building Sciences at Lawrence Berkeley National Laboratory (LBNL). He served as a Senior Advisor at the U.S. Department of Energy in the 1990s and Commissioner at the California Energy Commission under appointments of Governor’s Gray Davis and Arnold Schwarzeneggar before returning to LBNL. Dr. Rosenfeld received numerous awards, including the National Medal of Technology and Innovation. He co-founded the American Council for an Energy-Efficient Economy, authored or co-authored over 400 refereed publications, and inspired multitudes of students and colleagues. As stated by California Gov. Jerry Brown to the Los Angeles Times in 2010, “He gave validation to the very unorthodox notion that economic growth could be decoupled from energy growth.” Please see LBNL’s news release for a more complete appreciation of the life of Art Rosenfeld.