Researchers (IMAGE) University of Granada Caption Some of the researchers who conducted this study. From left to right, Francisco Acosta, Ely Merchan, Jonatan Ruiz, and Francisco Amaro. Credit University of Granada 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.