Biodiesel is non-petroleum-based diesel fuel derived from vegetable or animal fats. Ethanol is the most common form of biodiesel, based on corn in the US or sugar cane in Brazil, though other forms that utilize pig waste, algae or switchgrass are being developed.
Learn More About IT:
> Biodiesel.org is the official website of the national biodiesel board.
> Wikipedia's entry for biodiesel includes information about applications, history, availability, production and environmental effects.