A lift pump and a fuel pump might be part of the same system that delivers fuel to a diesel engine, but they have very ...

Accused of deleting emissions systems from diesel trucks in the heart of Wyoming's coal country, a Gillette man's federal ...

A Texas refinery that supplies green fuel to U.S. airlines has been purchasing animal fat from cattle raised on illegally ...

Toxic wastewater is spreading across America’s biggest oil field, posing a pressing threat to a basin that has grown into a ...