Long Beach, Wash., resident Bill Rayburn doesn’t pay at the pump to fill his gas tank. Instead, he helps himself to some greasy take-out from local restaurants. For the past four years, Rayburn, 53, ...

What to do with used cooking oil? Companies in Germany and Spain are making it easy for households to get rid of it - and turning it into biodiesel or even bio-jet fuel! Now there's no need to pour it ...

When the owner of the Silo Restaurant lived in France last winter, during his off-season, he didn't bring back a new recipe for french fries. Instead, he returned with a recipe for diesel fuel for his ...