The Pennsylvania county where an explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured more than 10 others announced Thursday that it is stepping up air quality monitoring ...

An explosion at Smitty’s Supply, Inc.’s oil and lubricant manufacturing plant in Roseland, Louisiana, a small town of less than 1,000 people 50 miles (80 kilometers) northeast of Baton Rouge, occurred ...

A chemical explosion in Toledo, Ohio filled the air with a toxic plume that became difficult to differentiate from the thick fog.

A grassroots environmental group says this week’s explosion of a natural gas pipeline in Cameron Parish is why its community air monitoring mission needs to be expanded. The Habitat Recovery Project ...