16x9_Reika Yokochi (IMAGE) DOE/Argonne National Laboratory Caption Scientist Reika Yokochi collecting water samples from the Floridan Aquifer. The team collected samples from eight wells and extracted the gas dissolved in the water, including the krypton-81, to analyze at Argonne’s TRACER Center. Credit (Image by Argonne National Laboratory.) Usage Restrictions Original Content 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.