Alternative fuels include biodiesel and hydrogen. Alternative fuels are important because they could eventually provide us with a cheaper, cleaner, and more abundant source of fuel. Check out these great alternative fuel articles from HowStuffWorks.
How Biodiesel Works
Soybean byproducts are nutritious and healthy. They can also power a car. Find out how soybean and other plant oils as well as animal fats are used to create the environmentally friendly fuel biodiesel.