Alternative Fuels

Alternative fuels include biodiesel and hydrogen. Alternative fuels are important because they could eventually provide us with a cheaper, cleaner, and more abundant source of fuel. Check out these great alternative fuel articles from HowStuffWorks.


What are the dangers of hydrogen-powered vehicles?

Did you know hydrogen-powered fuel cells are hitting the streets in some parts of the world? They're powered by the most abundant element in the universe and produce zero emissions. But are they dangerous?

10 Alternative Fuel Ideas That Never Made It Out of the Lab

You might be surprised by some of the alternative fuels mentioned here. Which of these ideas are pure crank science, and which have a real chance to change the world?

What's the difference between a fuel cell vehicle and a hydrogen-on-demand vehicle?

A hydrogen-on-demand system can provide hydrogen for a fuel cell or for an internal combustion engine. But what about claims indicating you can fuel your car with water? Is there any truth to those statements?

Alternative Fuel Vehicle Pictures

From electricity to saltwater to air, these vehicles run on all kinds of things you'd never imagine as fuel. What might power your car in the near future?

Can a car run on nuclear power?

The search for alternative fuel is on. Could a pocket-sized version of a nuclear power plant make your car run 5,000 miles (8,047 kilometers) between fill-ups?

Is hydrogen fuel dangerous?

Hydrogen proponents tout the energy efficiency and relative ease of producing this alternative fuel. Its opponents want us to remember the Hindenburg.

What if I put diesel fuel in an automobile that required unleaded fuel only?

Pouring diesel fuel into an unleaded tank isn't the end of the world: your car won't blow up. However, it won't start either. You'll have to do some serious cleaning to get your car running again.

Grassoline: Can we fuel cars with grass?

Can we use grass to power our cars? Proponents of cellulosic ethanol made from switchgrass think we can. Others fear we'll stop growing food to grow fuel.

Could salt water fuel cars?

There may be "water, water everywhere and not a drop to drink," but what if you could substitute seawater for gasoline? It's a little like alchemy, but could it work?

Is ethanol really more eco-friendly than gas?

When oil is expensive, contentious and scarce, fuel made from corn or cane starts to look pretty smart -- economically and environmentally. But not everyone sees it that way.