Researchers (IMAGE) University of Alberta Caption Jeffrey Gu (right) and Yunfeng Chen (left) are pictured here at a data collection site near Fort Mackay, Alberta. Photo supplied. Credit Jeffregy Gu and Yunfeng Chen 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.