Coal-fired engines can produce sparks that could ignite a wildfire.
Emily Fischer and her team pilot a specially outfitted aircraft to research smoke and air quality.
Wildfire threats in Colorado and across the Southwest have been significantly dampened by the monsoon season, but national fire and climatology experts said Wednesday the region is still grappling with the long-term effects of drought.
Air crews say that this fire season started a lot faster and harder than expected.
One woman died when a suburban Denver basement apartment flooded during the severe rain.
Monsoon storms helped dampen fire concerns in BLM-managed public lands across the state.
Jesper Joergensen has been charged with 141 counts of arson.
Currently more than 80 percent of the state is in some form of drought.
When it comes to prioritizing what to save in wildfires, life is more important than property and the environment.