help policy makers better address such issues and better anticipate future problems. It was Jack's optimism and imagination that did so much to help the United States face the difficult issues of our time, including the climate crisis. He was utterly unique and irreplaceable." Personal and family life Gibbons was born in Harrisonburg, Virginia, in 1929. As a teenager he became an Eagle Scout and earned the Order of the Arrow. Gibbons married Mary Ann Hobart in 1955; together they had three children: Virginia Neil, Diana Conrad, and Mary Marshall. For many years until shortly before his death, he and his wife resided in The Plains, Virginia. He is preceded in death by a brother, William Conrad Gibbons (1926-2015), an American historian noted for his in-depth chronicling of the Vietnam War. Gibbons died after a stroke at Crozet, Virginia in 2015. References External links Dr. John H. Gibbons Home Page Dr. John H. Gibbons Curriculum Vita Dr. John H. Gibbons Biography - Short White House Biography 2015 deaths 1929 births University of Tennessee faculty American physicists Clinton administration personnel Duke University alumni Fellows of the American Association for the Advancement of Science Fellows of the American Physical Society Members of the United States National Academy of Engineering Oak Ridge National Laboratory people People from Harrisonburg, Virginia People from The Plains, Virginia Randolph–Macon College alumni Scientists from Virginia Directors of the Office of Science and Technology Policy