Nathalie Wahl, University of Copenhagen (IMAGE) University of Copenhagen Caption This is professor Nathalie Wahl. Credit Jacob Helbig/University of Copenhagen Usage Restrictions Image may only be used with appropriate caption or credit 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.