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How Often Should You Wash Your Pillow?
All those dust mites, body oils and drool do a number on the cleanliness of your pillow. Grossed out yet?
Would having your own clone be like having an identical twin?
science.howstuffworks.com/life/genetic/clone-identical-twin.htm
The difference between a clone and a twin isn't great genetically. Find out why a clone and a twin are so similar and which would be your best match.
How long is too long for a pet to be in a car?
animals.howstuffworks.com/pets/pet-travel/too-long-for-pet-to-stay-in-car.htm
Pets can become uncomfortable easily, so you must make sure they aren't in the car for too long. But, how long is too long for a pet to stay in a car?
What are marbles and why do NASCAR drivers try to avoid them?
auto.howstuffworks.com/auto-racing/nascar/nascar-basics/nascar-marbles.htm
Marbles are tiny bits of rubber tire detritus that accumulate on the racetrack. Learn more about NASCAR marbles here.
9 Strange Last Wills and Testaments
money.howstuffworks.com/personal-finance/financial-planning/9-strange-last-wills-and-testaments.htm
Some people use their will as an opportunity to send a message from beyond the grave. Learn about 9 strange last wills and testaments.
How the FSF-1 Sea Fighter Works
science.howstuffworks.com/sea-fighter.htm
Nations are facing a more guerilla-style warfare - even at sea, and the equipment must evolve to meet new demands. Enter the Sea Fighter. Learn about this experimental, high-speed, "invisible" ship.
How many insects are there on Earth?
animals.howstuffworks.com/animal-facts/insects-on-earth.htm
Are you wondering how many insect are there on earth? Check out this article and learn how many insects there are on earth.
How a Baseball Scorecard Works
entertainment.howstuffworks.com/baseball-scorecard.htm
A baseball scorecard is a great way for a fan to connect with the game. Visit HowStuffWorks to learn how to fill out a baseball scorecard.
9 Cold Cases That Have Totally Baffled Investigators
people.howstuffworks.com/cold-cases.htm
Despite how hard investigators work, some crimes just baffle even the most gifted detectives. They go cold. That's where these nine cases stand. Will they ever be solved?
What Are Imaginary Numbers?
science.howstuffworks.com/math-concepts/imaginary-numbers.htm
An imaginary number is a value that's the square root of a negative number. It can't exist on a one-dimensional number line. We'll explain.