Harold “Hal” Johnston (41C) died October 20, 2012 at his home in Kensington, CA. He was 92. After leaving Emory, Johnston received a PhD at the California Institute of Technology where he later worked as a faculty member from 1956-1957. He was a professor of chemistry at University of California-Berkeley from 1957-1991, serving as Dean of the College of Chemistry from 1966-1970. He received numerous awards for his work in atmospheric chemistry, including National Medal of Science, the Tyler World Prize for Environmental Achievement and the National Academy of Sciences Award for Chemsitry in the Service to Society. Read more about his life in this tribute.