Nano-Ice Double Helix (image) University of Nebraska-Lincoln Share Print E-Mail Caption A computer image of the nano-ice double helix: oxygen atoms are blue in the inner helix, purple in the outer helix. Hydrogen atoms are white. Credit University of Nebraska-Lincoln Usage Restrictions With credit to university and use in the context of reporting this research discovery 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.