Samples (IMAGE) Aarhus University Caption Here is some of the samples used for recalibrating the carbon14-levels in the ocean near Greenland. Credit Christof Pearce Usage Restrictions May only be used when communicating this story. 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.