Sampling Sites (image) University of Washington Share Print E-Mail Caption On the road trip in early 2013, researchers collected hundreds of samples of undisturbed snow from 67 sites away from cities or major roads. Credit S. Doherty / Univ. of Washington Usage Restrictions With credit 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.