Home mechanics have been pouring vegetable oil into engines for years, sometimes in the fuel tank, sometimes straight into the crankcase, and often with a camera rolling. The appeal is obvious: a ...

Woods Hole, Martha's Vineyard and Nantucket Steamship Authority officials have approved a three-month trial of a renewable diesel fuel whose components would be just as at home in a vat to cook French ...

The U.S. Environmental Protection Agency has launched investigations into the supply chains of at least two renewable fuel producers amid industry concerns that some may be using fraudulent feedstocks ...

Dear EarthTalk: My understanding is that you can run a diesel car on used cooking oil. Why would I want to do that and how would I convert such a vehicle to do so? — Benjamin Crouch, Boston, Mass. The ...