Aaron Goodarzi and Dustin Pearson (IMAGE) University of Calgary Caption Aaron Goodarzi (standing) and Dustin Pearson look at human cells damaged by radon in the Environmental Cancer Research Hub, University of Calgary. Credit Supplied by University of Calgary Usage Restrictions None 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.