01/15/13 - Tuesday's Topical Currents is with science writer and paleontologist Neil Shubin, author of THE UNIVERSE WITHIN: Discovering the Common History of Rocks, Planets, and People. Shubin is an associate dean of biological sciences at the University of Chicago. Astronomical events which occurred billions of years ago still shape the unique quality of the human species, including our molecular structure and DNA. Learn more Tuesday at one o’clock on Topical Currents. Only on 91.3 WLRN.