Ice Crystal Stages (image) Hokkaido University Share Print E-Mail Caption Ice single crystals at different super cooling temperatures observed under a microscope. Credit Bayer-Giraldi M. et al., Proceedings of National Academy of Sciences, July 2, 2018 Usage Restrictions This image is copyrighted and can be used for reporting this press release if properly credited. Share Print E-Mail 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.