Andreas Josefsson and Karin Welen (IMAGE) University of Gothenburg Caption Andreas Josefsson, University of Umea, and Karin Welen, University of Gothenburg. Credit Photo by Mattias Pettersson and Ida Welén 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.