Ice core (IMAGE) Oregon State University Caption A slice from an Antarctic ice core. Researchers study the chemicals trapped in old ice to learn about past climate. Credit Photo by Katherine Stelling, Oregon State University. Usage Restrictions media use only 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.