Biodiesel is a renewable energy resource consisting of the alkyl monoesters of fatty acids obtained from vegetable oils, waste cooking oils, or animal fats. Biodiesel has been noticed recently as an ...

A fuel called Hydrotreated Vegetable Oil (HVO) is a beacon of hope for many who believe it will keep diesel combustion vehicles on the road for longer. Others suspect it is just another eco-con.

The world’s renewable fuelmakers are about to face a crunch in one of the most basic building blocks they need to be profitable: sufficient supply of waste oil. By 2030, global targets for the ...

As part of its Climate Emergency Workplan, the city of Portland proposes to phase out the sale of diesel derived from petroleum at all Portland fueling stations, replacing it with cleaner renewable ...