AIR POLLUTION LINKED TO LEARNING AND MEMORY PROBLEMS, DEPRESSION "Other co-authors, all from Ohio State, included Qinghua Sun, associate professor of environmental health sciences; Sanjay Rajagopalan, professor of cardiovascular medicine; Xiaohua Xu, in environmental health sciences; Zachary Weil, in neuroscience and psychology; and Guohua Chen in the Davis Heart and Lung Research Institute, Randy Nelson, co-author of the study and professor of neuroscience and psychology at Ohio State." http://researchnews.osu.edu/archive/pollutionbrain.htm