Esperanza Diaz (IMAGE) The University of Bergen Caption Professor Esperanza Diaz at the University of Bergen Credit Magne Sandnes Usage Restrictions This photo can only be used when referring to this press-release from the University of Bergen 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.