ice figure (IMAGE) University of Illinois Chicago Caption Impurities such as salt and alcohol affect how ice forms on surfaces, such as the hull of ships in arctic conditions. Credit Illustration by the Anand group Usage Restrictions n/a License Original 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.