R. Stephen Berry

R. Stephen Berry (April 9, 1931 – July 26, 2020) was an American professor of physical chemistry. He was the James Franck Distinguished Service Professor Emeritus at The University of Chicago. He was also Special Advisor for National Security to the Director, at Argonne National Laboratory. He was born in Denver, Colorado.
He died on July 26, 2020 in Chicago at the age of 89.