Portrait Anton Tamtögl (IMAGE) Graz University of Technology Caption The study results of Anton Tamtögl et al lead to a completely new understanding of ice formation: Water molecules require additional energy before they freeze into ice. Credit © Lunghammer - TU Graz Usage Restrictions Photo is free of charge for editorial purposes. The use of the photo is only permitted provided that the source is cited in full together with TU Graz. The use of the photo for advertising purposes by institutions not affiliated with TU Graz is only possible upon request. 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.