Permafrost (IMAGE) University of Barcelona Caption Carolina Olid, primera autora del estudio y miembro de la Facultad de Ciencias de la Tierra y del Instituto de Investigación Geomodels de la UB. Credit UNIVERSIDAD DE BARCELONA Usage Restrictions Credit must be given to the creator. License CC BY 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.