Jatropha is a nondescript and rather ugly desert shrub, but its appearance belies a huge potential as a major source of oil for biodiesel production on land that doesn’t compete with food crops — and the whole world is taking notice.
Green Fuel

Jatropha: From Haitian Voodoo to Biodiesel Holy Grail : Gas 2.0

Turn Your Burger Into Fuel!
Theres no doubt that San Francisco, if not all of California, is ahead of the curve with regards to environmentalism. All things green are coming out of there, but there is definitely some great steps made from all over the world. So we can’t give all the credit to California, but this next one is a beauty.
The Ultimate Green, Renewable Fuel (and Food): Algae, Possibly
Across the U.S., researchers, startup companies and investors are exploring the potential of creating large amounts of green, renewable fuel from the humblest of sources: algae. If you think the energy/food potential for hemp is underutilized, wait’ll you get a gander at algae. This little microorganism really packs a punch.
Green Fuel from coal - greener energy?
Silverado Green Fuels Inc. purports to have developed a coal based technology (hydrothermal treatment process) with the potential to augment or replace oil based energy at a fraction of the cost.