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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.
Did the Great Chicago Fire really start with Mrs. O'Leary's cow?
history.howstuffworks.com/history-vs-myth/chicago-fire-cow.htm
Legend has it that the Great Chicago Fire started with Mrs. O'Leary's cow and a lantern in the shed. Did a cow really start the Great Chicago Fire?
Are Polar Bears Endangered?
science.howstuffworks.com/environmental/green-science/polar-bear-global-warming.htm
Polar bears and global warming are getting attention from conservationists and the general public. See why polar bears are threatened by global warming.
How do sharks see, smell and hear?
animals.howstuffworks.com/fish/sharks/shark-senses.htm
A shark sense isn't so different from any of our senses, a shark sense is just sharper underwater. See more about shark sense and how each works.
How many words do dogs understand?
animals.howstuffworks.com/pets/dogs-understand-words.htm
Do dogs understand what you say to them? Unbelievably so, dogs may understand over 100 words. Learn more about dogs' understanding of words.
How can the moon generate electricity?
science.howstuffworks.com/moon-generate-electricity.htm
Moon electricity is generated from the moon's gravitational influence over tides on the Earth's surface. Learn how moon electricity is created from tides.
What's Oil Shale?
science.howstuffworks.com/environmental/energy/oil-shale.htm
Oil shale is just one unconventional oil source that's being researched. Learn how oil shale could save the day when - and if - we hit peak oil in the U.S.
How Zombie Debt Works
money.howstuffworks.com/personal-finance/debt-management/zombie-debt.htm
Zombie debt is debt that has been proclaimed uncollectable by a lender, who then sells it to a collection agency. Learn more at HowStuffWorks.
How Tax Brackets Work
money.howstuffworks.com/personal-finance/personal-income-taxes/tax-brackets.htm
Tax Brackets are ranges of income that are taxed at different rates. Find out which tax bracket you're in and learn the history behind tax brackets.
Why did Lady Godiva take a naked horse ride?
history.howstuffworks.com/history-vs-myth/godivas-ride.htm
Lady Godiva is famous for a naked horse ride through town. But is there more to the legend of Lady Godiva? And why is she the symbol of Godiva chocolates?