David Herrero, Universidad del País Vasco (IMAGE) University of the Basque Country Caption El autor de la investigación. Credit Tere Ormazabal. UPV/EHU 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.