If you plan on steaming a huge Navy ship around the globe, it's going to need a lot of fuel to keep it running. That's a problem when you're thousands of miles from home in hostile waters. But what if you could simply make your own fuel using the seawater that surrounds you? That's what the U.S. Navy wants to do, using a two-step process that turns seawater into jet fuel.

There has been some amazing advances in the fuel-world, such as airplanes being powered by cooking oil and other biofuels being used to replace gasoline. Along the lines of the latter, we're now eyeing trees as a source to help lessen our reliance on dead dinosaurs.

NASCAR racing and treehugging are not activities that normally go hand in hand, but a California NASCAR circuit is making a big push to ensure that their facility is as green as possible.

This Continental Supersports car roars to 60 mph in just 3.7 seconds and reaches a hair-raising top speed of 204 mph, but we've come to expect that from Bentley. We nearly choked when we heard that it runs on biofuel,...