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.
Be Your Own Mechanic

Car Smarts: Biodiesel

The biodiesel quiz will test your knowledge about biodiesel components, biofuel history and biodiesel pros and cons. Take the quiz and see how much you know about how biodiesel works.

11-20 of 43
  • Car Smarts: Is hydrogen fuel dangerous?

    Car Smarts: Is hydrogen fuel dangerous?

    Fuel cells and hydrogen power offer many benefits, but there are dangers as well. Put on your protective gear and find out how much you know about hydrogen fuel's dangers (or lack thereof) in this quiz. See more »

  • Could salt water fuel cars?

    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? See more »

  • Does hydrogen destroy metals?

    Does hydrogen destroy metals?

    Got your eye on a hydrogen-powered vehicle? The energy of the future comes with some baggage, including an uncanny ability to migrate through metals. Here's what you need to know. See more »

  • Ethanol, E85, Flex Fuel…What Does It All Mean?

    Ethanol, E85, Flex Fuel…What Does It All Mean?

    Flex Fuel? Ethanol? E85? Been wondering what exactly all of this means? Keep reading to learn about new advances in alternative fuels. See more »

  • Grassoline: Can we fuel cars with grass?

    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. See more »

  • How Biodiesel Works

    How Biodiesel Works

    Soybean byproducts are nutritious and healthy. They can also power a car. Find out how soybean and other plant oils as well as animal fats are used to create the environmentally friendly fuel biodiesel. See more »

  • How Carbon-neutral E-fuels Work

    How Carbon-neutral E-fuels Work

    For a while, many of us imagined the possibilities: streets full of zero-emission electric vehicles (EVs). But the EV concept has suffered from a certain fragility, and some companies have shifted strategies. Let's talk about a few of them. See more »

  • How E85 Ethanol Flex Fuel Works

    How E85 Ethanol Flex Fuel Works

    Corn distilled into ethanol and mixed with gasoline is used to create E85. Each gallon of E85 consists of 85 percent ethanol and 15 percent gasoline. Learn the pros and cons of this new fuel. See more »

  • How Formula E Will Work

    How Formula E Will Work

    Watching a field of Formula E race cars circle a racetrack is going to require some adjustment on the part of the spectators. Why? Because they're quiet. Chirping-crickets quiet. See more »

  • How Fuel Cells Work

    How Fuel Cells Work

    Why are governments, private businesses, and academic institutions collaborating to research develop and produce fuel cells? Learn how fuel cells work and how efficient they really are. See more »

11-20 of 43
  • Most Popular