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How Tooth Whitening Works
science.howstuffworks.com/innovation/everyday-innovations/tooth-whitening.htm
In the past few years, tooth-whitening has exploded as the physical upgrade of choice. Unlike nose jobs and chin tucks, just about anybody can afford to try this at home. Learn about different whitening techniques and how they work, and decide if you should give it a try.
How Tires are Made
auto.howstuffworks.com/how-tires-are-made.htm
Tire making is a tough job. Learn more about how tires are made at HowStuffWorks.
Understanding Eccrine Sweat Glands
health.howstuffworks.com/wellness/men/sweating-odor/understanding-eccrine-sweat-glands.htm
Eccrine sweat glands are an essential part of our thermoregulation. Visit Discovery Health to learn all about eccrine sweat glands.
Can You Crush This General Knowledge Quiz?
play.howstuffworks.com/quiz/99-people-cant-crush-this-general-knowledge-quiz-can-you
From classic films to literature to American history, how well do you know basic trivia? Test your knowledge and perhaps learn something new with this general knowledge quiz!
Can You Pass This Basic Trivia Quiz?
play.howstuffworks.com/quiz/can-you-pass-this-basic-trivia-quiz
Do your friends ask you to tag along to trivia night, or are you always left out? Once you pass this basic trivia quiz, you'll prove why you deserve the invitation, or why you should stay at home! Which one will it be?
Ultimate "Star Wars" Quiz
play.howstuffworks.com/quiz/ultimate-star-wars-quiz-learn
Perhaps THESE are the droids you're looking for? Take this 40-question "Star Wars" quiz and test your knowledge on everything from "A New Hope" to "The Force Awakens."
What Is ESP? How ESP Works
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/esp.htm
Have you ever had a dream that came true? Or called a friend at the exact moment he was calling you? Most of us have had some sort of paranormal experience. Is this evidence of the existence of ESP?
How Space Suits Work
science.howstuffworks.com/space-suit.htm
We are seeing a lot more space suits now that the international space station is occupied. Learn how space suits work and why they cost $12 million each!
10 Bizarre Moments in Presidential Elections
people.howstuffworks.com/10-bizarre-moments-presidential-elections.htm
Historically, presidential elections have been fraught with strange twists. Learn about 10 bizarre moments in presidential elections at HowStuffWorks.
How could adding lime to seawater cut atmospheric CO2?
science.howstuffworks.com/environmental/green-science/lime-seawater.htm
Adding lime to seawater could increase the efficiency of the world's oceans as carbon sinks. Learn about adding lime to seawater and carbon sinks.