You just can't mistake it for anything else, especially if you come from a country where old diesel Mercedes are popular ...

Scientists have developed a new way to power ferry boats using air instead of diesel. This cleaner method uses pneumatic ...

The Deccan Queen, India’s first electric express train, has been in a rare gesture, running with diesel locomotives since ...

Those old diesel realities no longer apply ... That contrasts with what the EPA alleges the engine actually does: emit nitrogen oxides, or NOx, at up to 40 times the government standard.