Christopher Chambers and Ralf Greve (IMAGE) Hokkaido University Caption Christopher Chambers and Ralf Greve, the collaborators from Hokkaido University, in front of the ice crystal mosaic in the Institute of Low Temperature Science (Photo: Ralf Greve). Credit Ralf Greve Usage Restrictions This image is copyrighted but may be used to report this press release if credited as instructed. 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.