If you drive a diesel car or truck, you've probably bumped into the term biodiesel. Like most owners, you probably first saw the term biodiesel on the pump (as a mix for ultra-low-sulfur diesel) – and ...

We often associate diesel with bigger vehicles. Diesel trucks are the workhorses of our roads, and the reason for this is quite clear: a diesel engine can be one of the most reliable and powerful ...

Washington state agencies and universities failed to buy enough biodiesel last year, violating for the 15th straight year a state law the Legislature passed to fight climate change. Agencies and ...