Thomas Koop, Bielefeld University (IMAGE) Bielefeld University Caption Prof. Dr Thomas Koop from Bielefeld University is studying how ice forms in microscopic spaces. Credit Bielefeld University Usage Restrictions The 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.