Dag Noréus, Stockholm University (IMAGE) Stockholm University Caption This is Dag Noréus, professor at the Department of Materials and Environmental Chemistry. Credit Photo: Niklas Björling Usage Restrictions For press use. 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.