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Differences Between Rational and Irrational Numbers
science.howstuffworks.com/math-concepts/rational-vs-irrational-numbers.htm
Rational numbers can be expressed as the ratio of two integers, while irrational numbers, such as square roots of non-square numbers, cannot.
Why do people collect shark teeth?
animals.howstuffworks.com/fish/sharks/shark-teeth.htm
Collecting shark teeth is a hobby for many people, but why do we do it? Learn why collecting shark teeth is like gathering up pieces of history.
Skin Toner Basics
health.howstuffworks.com/skin-care/beauty/skin-toner.htm
Skin toner is an important product in skin care. Visit HowStuffWorks to learn all about skin toner.
Could you have a heart attack -- and not know it?
health.howstuffworks.com/diseases-conditions/cardiovascular/heart/heart-attack-no-symptoms.htm
A heart attack with no symptoms is deadly. You're less likely to seek help if you think it's indigestion. Learn about a heart attack with no symptoms.
What causes hot flashes?
health.howstuffworks.com/wellness/women/menopause/cause-hot-flash.htm
What causes hot flashes? Read this article to discover the answer to the question, what causes hot flashes?
How the Ferrari FF Works
auto.howstuffworks.com/ferrari-ff.htm
Does the four-seater Ferrari FF measure up to the performance of other Ferraris? Read details and specs for the Ferrari FF at HowStuffWorks.
How to Get Rid of Frown Lines
health.howstuffworks.com/skin-care/problems/treating/get-rid-of-frown-lines.htm
Getting rid of frown lines can be tricky. Learn how to get rid of frown lines at HowStuffWorks.
5 Ways to Protect Your Deck
home.howstuffworks.com/5-ways-to-protect-your-deck.htm
Are you looking for some ways to protect your deck? Check out this article and learn 5 ways to protect your deck from wear and tear.
5 Ways to Donate Your Old Smartphone or Cell Phone to Charity
electronics.howstuffworks.com/donate-cell-phone-charity.htm
Learn more about five ways to donate your old cell phone or smartphone to charities that recycle or refurbish old phones.
What are the most promising new weapons in the war on cancer?
health.howstuffworks.com/diseases-conditions/cancer/facts/war-on-cancer.htm
In the war on cancer, some new treatments are now available to improve survival rates. Learn about new cancer treatments and the war on cancer.