Jim Knox, who spent more than four decades as a faculty member at UW-Madison, died at his home in Madison on Saturday, the university announced. Knox, 70, was the Evjue-Bascom professor emeritus of Geography. Although he retired last year, the university reports he continued to work in Science Hall. Knox?s research focused on the field of fluvial geomorphology, which the university describes as the study of streams and the landforms they produce.