“Environmental Ed” informs us that biodiesel is among the most diverse fuels imaginable and that it is nontoxic and biodegradable. It can be produced from any fat or oil such as soybean and vegetable oil. At one time used cooking oil from fast-food restaurants was wasted and thrown away, but scientists realized that a clean burning alternative fuel could be produced from this domestic renewable resource. These oils can be used to run cars, busses and trucks. In fact, burning grease and oil really works and saves our earth’s air too. When a truck burns this fuel it produces the same smell as cooking French fries. It is called biodiesel.