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What is pollen?
health.howstuffworks.com/diseases-conditions/allergies/outdoor-allergies/what-is-pollen.htm
Pollen, a fine powder, is the sperm that flowers use to reproduce. Learn what pollen is in this article.
Are chest X-rays required for cystic fibrosis?
Learn more about chest X-rays for cystic fibrosis from this article. Visit HowStuffWorks to learn are chest x-rays required for cystic fibrosis.
Can dogs get the hiccups?
animals.howstuffworks.com/pets/can-dogs-get-the-hiccups.htm
Do dogs hiccup? Visit HowStuffWorks to learn more about what makes dogs hiccup in this article.
Can vitamin C help treat respiratory congestion?
health.howstuffworks.com/diseases-conditions/respiratory/vitamin-c-treat-respiratory-congestion.htm
Visit HowStuffWorks to read and learn whether vitamin C can help treat respiratory congestion in this article.
How do solar swimming pool covers work?
home.howstuffworks.com/solar-swimming-pool-covers.htm
How do solar swimming pool covers work? Visit HowStuffWorks.com to learn how solar swimming pool covers work.
How are frequency and wavelength of light related?
science.howstuffworks.com/dictionary/physics-terms/frequency-wavelength-light.htm
Frequency has to do with wave speed and wavelength is a measurement of a wave's span. Learn how frequency and wavelength of light are related in this article.
How does a virus behave in the body?
health.howstuffworks.com/diseases-conditions/infectious/virus-behave-in-the-body.htm
In general, people are at their most contagious approximately three days after having been exposed to a virus. You can learn more about how a virus behaves in the body from this article.
Odds of Death: A Numbers Game
health.howstuffworks.com/diseases-conditions/death-dying/what-are-the-odds.htm
What are the odds of being struck by lightning? How many people die in car accidents every year? Find out the odds of some common and some unusual death scenarios.
How to Use a Fire Extinguisher
home.howstuffworks.com/home-improvement/household-safety/fire-extinguisher.htm
While there's a good chance that your fire extinguisher will sit on the wall for years, collecting dust, it could end up saving your property and even your life. Learn the correct way to use an extinguisher and see what sort of fire suppressant works best on different types of fires.
The Reagan Administration
history.howstuffworks.com/american-history/the-reagan-administration.htm
The Reagan administration played a big role in modern American history. Learn more about the Reagan administration at HowStuffWorks.