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Is hydrogen fuel dangerous?
auto.howstuffworks.com/fuel-efficiency/alternative-fuels/dangerous-hydrogen-fuel.htm
Hydrogen fuel is an attractive alternative fuel source. Learn about hydrogen fuel and the dangers of the element, including the Hindenburg disaster story.
Is there such a thing as a truly unselfish act?
science.howstuffworks.com/life/evolution/unselfish-act.htm
An unselfish act is an act in which one person benefits while the person performing the act gains nothing. Find out if an unselfish act is possible.
Is fluoride considered a poison in most European countries?
health.howstuffworks.com/wellness/oral-care/products/fluoride-poisoning.htm
Fluoride is commonly added to drinking water but could be dangerous. Learn about fluoridation and fluoride poisoning.
How Watersheds Work
science.howstuffworks.com/environmental/conservation/issues/watershed.htm
You're probably standing in one right now, but do you know what a watershed is and how watersheds work? Learn how watersheds work here.
Ginseng: Herbal Remedies
health.howstuffworks.com/wellness/natural-medicine/herbal-remedies/ginseng-herbal-remedies.htm
Ginseng is used in herbal remedies that can reduce stress and improve overall well-being. Learn how to use ginseng and make ginseng tea.
Is a free market "free" if it's regulated?
money.howstuffworks.com/free-market-economy.htm
A free market is subject to peaks and troughs in a bustling or failing economy -- no one regulates it. Learn how a free market works and theories behind it.
Environmental Activities
lifestyle.howstuffworks.com/crafts/animal-crafts/environmental-activities.htm
Dig in dirt or through books to educate yourself on the environment. Learn more about environmental activities and kids crafts.
10 Countertop Cleaning Tips
home.howstuffworks.com/green-living/countertop-cleaning-tips.htm
Cleaning kitchen countertops is an important chore since they are exposed to everything from hot pans to spilled juice. Follow these cleaning tips.
How Jet Lag Works
science.howstuffworks.com/life/inside-the-mind/human-brain/jet-lag.htm
Jet lag can be a drain on any long-distance trip. Learn about what causes jet lag and the best ways to prevent and deal with jet lag at Discovery Health.
Skin-lightening Moisturizers
health.howstuffworks.com/skin-care/moisturizing/products/skin-lightening-moisturizers.htm
Skin-lightening moisturizers are available for those interested in skin-lightening. Visit HowStuffWorks to learn all about skin-lightening moisturizers.