Sarah Horst, University of Arizona (IMAGE) University of Arizona Caption "When I came back and looked at the screen, I thought: That can't be right," said graduate student Sarah Horst. Credit Daniel Stolte/University of Arizona Office of Communications Usage Restrictions Usage granted only in conjunction with reporting/posting of this news release. 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.