Nelson George Hairston. Jr. is a professor retiring from Cornell after 34 years in the Department of Ecology and Evolutionary Biology. In this video he describes his education, how he became interested in biology and his career at Cornell. His colleague, Prof. Anurag Agrawal asks him about his research and other activities at Cornell including Hairston's involvement in Lake Source Cooling and his time as Senior Associate Dean in the College of Arts and Sciences.