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Biofuels vs. Fossil Fuels
auto.howstuffworks.com/fuel-efficiency/biofuels/biofuel-fossil-fuel.htm
What's the difference between biofuels and fossil fuels? Keep reading to see how biofuels compare to fossil fuels.
How Soda Fountains Work
recipes.howstuffworks.com/soda-fountains.htm
Soda fountains once dispensed pure carbonated water that could be mixed with hundreds of flavors. Learn more about the history of soda fountains.
How Submarines Work
science.howstuffworks.com/transport/engines-equipment/submarine.htm
Not so long ago, the world's naval forces worked entirely above water. But all that changed with the addition of the submarine to the standard naval arsenal.
How Exercise Works
health.howstuffworks.com/wellness/diet-fitness/exercise/sports-physiology.htm
Exercise creates a set of responses in your body, whether you work out regularly or not. Find out how these responses can be enhanced by training.
Baking Powder Questions
recipes.howstuffworks.com/tools-and-techniques/baking-powder-questions.htm
Baking powder is a leavener that makes baked goods rise and is similar to baking soda. Learn how to use and store baking powder in this article.
What Is the Greenhouse Effect? Is It Inherently Bad?
science.howstuffworks.com/environmental/green-science/question746.htm
We'd be up a creek without Earth's atmosphere and the greenhouse effect it provides, but it turns out that an overactive greenhouse effect can result in a similarly devastating outcome.
Do solar powered cars cause pollution?
auto.howstuffworks.com/fuel-efficiency/vehicles/solar-powered-cars-pollution.htm
Do solar powered cars cause pollution? Keep reading to learn about solar powered cars and if they cause pollution.
Do bug zappers really help fight mosquitoes?
home.howstuffworks.com/do-bug-zappers-fight-mosquitoes.htm
If the mosquitoes have been keeping you away from your picnic table, you might consider a bug zapper. Find out if they really work in this article.
How Global Warming Works
science.howstuffworks.com/environmental/green-science/global-warming.htm
Global warming is becoming an increasingly important issue. Find out what causes global warming and learn how we can decrease the effects of global warming.
How are coffee, tea and colas decaffeinated?
recipes.howstuffworks.com/question480.htm
I love decaffeinated coffee, but I've always wondered how they get the caffeine out of a coffee bean. How are coffee, tea and colas decaffeinated?