Dave McWethy, Montana State University (IMAGE) Università Ca' Foscari Venezia Caption This is Dave McWethy, Montana State University, holding a sediment core. Credit Daniel Schmidt for Montana State University Usage Restrictions Attribution License Licensed 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.