Authors of the research (IMAGE) Universitat Pompeu Fabra - Barcelona Caption From left to right: Inés Gallego, Antoni Pastor, Alba Garcia-Baos, Olga Valverde and Rafael de la Torre. Credit: UPF. Credit UPF Usage Restrictions no License Original 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.