Water Droplet (1 of 2) (image) American Institute of Physics Caption A freezing front travels up a drop of water on a cold surface, forming a sharp point at the top. Credit Oscar R. Enríquez, Álvaro G. Marín, Koen G. Winkels, and Jacco H. Snoeijer, Physics of Fluids Group, University of Twente, Enschede, The Netherlands Usage Restrictions With proper credit. 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.