Utah State University geoscientist Tammy Rittenour (image) Utah State University Share Print E-Mail Caption Utah State University geoscientist Tammy Rittenour at western Canada's Athabaska Glacier. Rittenour is part of a multi-institution effort that provided definitive field data indicating global climate changes affect river erosion rates. Credit Gary O'Brien Usage Restrictions Credit author 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.