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The Biofuel Quiz
play.howstuffworks.com/quiz/biofuel-quiz
What do vegetable oil, corn and salt water have in common? They're all potential fuel sources for our cars. See how much you know about the next generation of biofuels in our Biofuel Quiz.
The Cleanest Lakes in the U.S. Aren't the Same as the Clearest
science.howstuffworks.com/environmental/earth/cleanest-lakes-in-the-us.htm
American lakes are a vital feature of the country's landscape and cultural identity; from the Great Lakes in the Upper Penninsula to the picturesque Ozarks of the Midwest, citizens have flocked to these large freshwater sources for trade, natural resources and top-notch recreational activities.
10 Things You Need to Know About Wood Pellet Fireplaces
To save money, many people are considering alternative heat sources, and wood pellet fireplaces are one possible solution to rising energy costs. But what do you need to know before you head out to buy one of these energy savers?
Health Benefits of Legumes
recipes.howstuffworks.com/health-benefits-of-legumes-ga.htm
Legumes offer many health benefits, including lowering heart-disease risk and stabilizing blood glucose levels. Learn the health benefits of legumes.
5 Ideas for Experiments on Conserving Energy
science.howstuffworks.com/environmental/conservation/5-experiments-conserving-energy.htm
About 70 percent of our energy comes from non-renewable sources like oil and natural gas. When they're gone, they're gone for good. Learn some simple ways to conserve energy through these five simple experiments.
How Wireless Power Works
electronics.howstuffworks.com/everyday-tech/wireless-power.htm
Unless you are particularly organized and good with tie wrap, you probably have a few dusty power cord tangles around your home. Find out how methods of wireless power transmission could cut the clutter or lead to clean sources of electricity.
A Tree Frog Can Breathe Through Its Skin
animals.howstuffworks.com/amphibians/tree-frog.htm
The tree frog is a small, agile amphibian best known for its climbing ability and vocal nighttime habits. These frogs are typically found in warm, moist environments across the central and southeastern United States, though they can thrive in many habitats with a nearby water source.
Natural Weight-Loss Food: Whole-Wheat Bread
Whole-wheat bread is good for you for many reasons and can be the best fat-fighter in your diet. Learn how to choose the right bread for your diet.
What Do Snails Eat ... and How?
animals.howstuffworks.com/insects/what-do-snails-eat.htm
Have you ever wondered, what do snails eat? And how long does it take these slow-moving, slimy creatures to reach their food sources? Well, whether they’re in a garden, a pond or aquarium, a snail's varied diet helps it survive in different environments.
How Much Do You Know About Diesel Engines?
play.howstuffworks.com/quiz/how-much-do-you-know-about-diesel-engines
The modern diesel engine is no longer the black smoke, difficult to start, noisy engine that it was a few decades ago. Modern diesel engines are efficient, powerful and above all, use far less fuel. But just how much do you know about engines run by an alternate fuel source?