After two weeks of steady increases, both diesel and gasoline prices have finally dropped. According to data released by the ...

Asking "what does biodiesel mean" is a perfectly fair question, since not many people realize it's even an option. Put simply ...

Benz & Cie. revealed the first diesel truck in 1923, with the designation of Benz Type 5K3, powered by a precombustion engine ...

Big changes are taking effect for Californians starting Tuesday, affecting everything from to-go drinks, travel plans and ...