S. Lawrence Zipursky, Ph.D. (IMAGE) Columbia University Irving Medical Center Caption This is S. Lawrence Zipursky, winner of the 2015 Louisa Gross Horwitz Prize. Credit University of California, Los Angeles Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.