Dr. Paul Diehl and Yahve Gallegos (IMAGE) University of Texas at Dallas Caption This is Dr. Paul Diehl and PhD student Yahve Gallegos. Credit UT Dallas 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.