Going to great heights to collect rocks (IMAGE) Norwegian University of Science and Technology Caption Researcher Nat Lifton (closest) and mountain guide Carl Lundberg (higher up) climb a small nunatak to look for suitable rock samples. Credit Photo: Ola Fredin, NTNU Usage Restrictions Only in conjunction with articles about this research and with proper credit. 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.