Richard B. Primack
Climate Change Comes to Thoreau's Woods
Karl received a BA from the University of Louisville in 1949, an MA from the University of Chicago in 1951, and a PhD from Harvard University in 1961. He served on the faculties of Harvard, Washington University in St. Louis and Brown University before joining the University of Chicago faculty in 1971. He was chair of the History Department at Chicago from 1976 to 1979.