Ding Xue, University of Colorado Boulder (IMAGE) University of Colorado at Boulder Caption This is Professor Ding Xue of the University of Colorado Boulder. Credit Casey A. Cass, University of Colorado 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.