Andrei Chabes, Umeå University (IMAGE) Umea University Caption Professor Andrei Chabes is one of the researchers at Ume&aring; University in Sweden behind the new findings. Credit Mattias Pettersson, Umeå University Usage Restrictions This photo may only be used in contexts related to this news release. 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.