U.S. Forest Service

The U.S. government can keep using chemical retardant dropped from aircraft to fight wildfires, despite finding that the practice pollutes streams in western states in violation of federal law, a judge ruled Friday. Halting the use of the red slurry material could have resulted in greater environmental damage from wildfires, said U.S. District Judge Dana Christensen in Missoula, Montana. The judge agreed with...