Professor emeritus at the University of Colorado and former head of its rheumatology division, died at age 82. Dedicated to research, teaching, and patient care, he was a pioneer investigator of the underlying biologic mechanisms of rheumatoid arthritis. In the 1980s, he discovered an anti-inflammatory protein called interleukin-1 receptor antagonist that led to a new commercial drug to treat arthritis and other diseases and a better understanding of autoimmune and inflammatory diseases. He was an editor of the Arthritis & Rheumatism Journal and received numerous honors for his research achievements, including a Guggenheim Foundation Fellowship, a Pinnacles in Inventorship Lifetime Achievement Award from CU Innovations, a VP&S Alumni Association Gold Medal for Outstanding Achievement in Medical Research, and the American College of Rheumatology Gold Medal Award. He loved the outdoors and was a passionate advocate for the environment. List of survivors. Photo.