Wildfire researchers (IMAGE) McMaster University Caption Researchers Sarah Styler (left) and Iris Chan say wildfire events may become an increasingly dominant and troubling source of pollution in urban areas. Credit McMaster University 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.