Sampling (IMAGE) Florida State University Caption Robert Spencer sampling the Yukon River at the Yupik village of Pilot Station, Alaska, during the peak of spring thaw. Credit Courtesy of Robert Spencer, Florida State University Usage Restrictions This image may be used with appropriate caption and credit. 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.