DENVER — A final air pollution permit issued to the Suncor refinery in Commerce City by state officials that was approved by the Environmental Protection Agency has been sent back to the drawing board ...

Once again, businesses are complaining that the cost of cleaning up L.A.’s rotten air will take too big a bite out of their bottom line. This time it’s school bus contractors who, along with school ...

A wipeout into a sea of rubbish over two decades ago prompted Ernest Goh to shed light on the growing plastic pollution crisis. The artist and photographer founded the “Ayer Ayer” project – an ...

Federal energy officials are opposing new rules by Montana to force companies that extract methane gas from underground coal beds to clean up the water pollution caused by drilling operations, even as ...