Research Team (IMAGE) Princeton University Caption These are researchers led by M. Zahid Hassan (second from left) at Princeton University Credit Photo by Denise Applewhite, Princeton University Usage Restrictions Photo by Denise Applewhite, Princeton University 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.