The Trump administration has taken aim at the "endangerment finding," which has allowed for federal regulations on climate change pollution.

The Clairton Coke Works is considered the largest coking operation in North America and one of four major U.S. Steel plants ...

A Colorado prison was evacuated as one of the largest wildfires in state history continued to grow, and officials warned residents of remote areas to be ready to leave Sunday as gusty winds and low ...

Forecasting wildfire smoke is hard. We review the best tools to help you predict when unhealthful levels of smoke are coming.

Heavy surface smoke from wildfires in Canada is drifting across Minnesota on Monday, with unhealthy air quality levels ...