Dr. Dylan Craven, (IMAGE) University of Göttingen Caption Pictured here: Dr. Dylan Craven from the University of Göttingen and lead author of the study. Credit Nathaly Guerrero Usage Restrictions Credit: Nathaly Guerrero 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.