Methane Bubble (IMAGE) University of Alaska Fairbanks Caption Graduate students Sudipta Sarkar, center, and Laura Brosius, left, and researcher Katey Walter pose near a large pocket of methane frozen in the ice of a thermokarst lake in Interior Alaska in October 2007. Credit Photo by Dragos Vas Usage Restrictions The University of Alaska Fairbanks Office of University Relations makes high-resolution photographs available to the news media for non-commercial uses only. All uses are for one-time, exclusive use in one publication or production only. Due credit will be given to the photographer whose name is provided by UAF Office of University Relations. Other image requests can be submitted via our online image request form at: http://www.uaf.edu/univrel/image_request.html. Movies on the UAF website can not be used without permission. For more information or to obtain broadcast quality footage, send an e-mail to newsroom@uaf.edu. Media outside Alaska: If you use images provided by UAF we'd appreciate knowing about it by dropping us an e-mail at newsroom@uaf.edu and alerting us to the publication date or web URL. 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.