Petrenko Methane Research 2 (IMAGE) University of Rochester Caption This is Vasilii Petrenko loading an ice core into the melting chamber for extraction of trapped ancient air. Credit Xavier Fain Usage Restrictions None 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.