Drilling Coral Cores (IMAGE) University of New South Wales Caption Researchers dive down to corals to extract coral cores that will give us information about Earth's past climate. Credit Picture: Jason Turl Usage Restrictions Copyrighted: Only to be used with this story. 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.