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How to Allergy-Proof Your Home
Keeping an allergen-free house is not an impossibility. Learn more about allergy-proofing your home.
HowStuffWorks Newsletter Quiz
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If you took one of our recent newsletter quizzes, you've come to the right place for the answers.
When Were the Twin Towers Built?
science.howstuffworks.com/engineering/structural/wtc.htm
The twin towers of the World Trade Center were true originals -- their history is one of innovation, persistence and grand ideas.
How LAN Switches Work
computer.howstuffworks.com/lan-switch.htm
We wouldn't get very far without LAN switches -- bedlam would break loose at each network junction. Learn how LAN switches work.
How Organ Donation Works
health.howstuffworks.com/medicine/modern-treatments/organ-donation.htm
Organ donation is a medical marvel. Read about organ transplants and find out what it's like to donate an organ.
A Guide to Furniture Finishes
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Choosing a furniture finish can be difficult because you have many options. Learn when and how to use a variety of finishes on your wooden furniture.
How to Repair Wooden Furniture Surfaces
From scratches to discoloration, the surfaces of your wooden furniture are vulnerable to all kinds of damage. Luckily, many of the problems can be fixed. Read this article to learn how.
How Holograms Work
science.howstuffworks.com/hologram.htm
If you want to see a hologram, you don't have to look much farther than your wallet. But the most impressive holograms are large scale and illuminated with lasers or displayed in a darkened room with carefully directed lighting. Learn how a hologram, light and your brain work together make clear, 3-D images.
How Offshore Drilling Works
science.howstuffworks.com/environmental/energy/offshore-drilling.htm
Offshore drilling means combing Earth for new underwater oil reserves. Learn more about offshore drilling and finding oil in the midst of rough seas.
How the Census Works
people.howstuffworks.com/census.htm
The U.S. census is a huge project bent on counting every U.S. resident. Find out about the changes for the 2020 census with HowStuffWorks.