Support WBURMontana Wildfires Provide A Wealth Of Data On Health Effects Of Smoke ExposurePlay03:53Download AudioNora SaksFebruary 24, 2018 ShareWildfire smoke filled the sky in Seeley Lake, Mont. on Aug. 7, 2017. Weather effects concentrated the accumulating smoke, chronically exposing residents to harmful substances in the air. (InciWeb)
