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How do oil and air filters affect your engine?
auto.howstuffworks.com/oil-air-filters-affect-engine.htm
How do oil and air filters affect your engine? Learn more about oil and air filers and how they affect your engine in this article.
How to Wash Black Clothes
Fibers are fragile and don't last forever. Find out how to wash dark clothes so they maintain their look long after they're first snatched off the rack.
Interstellar Asteroid 'Oumuamua Has Loads More to Tell Us
science.howstuffworks.com/interstellar-asteroid-oumuamua-has-loads-more-to-tell-us.htm
Astronomers have determined that 'Oumuamua was probably kicked out of its own star system by an overbearing gas giant. Learn more at HowStuffWorks.
'If You Need Anything, Let Me Know': What Not to Say to a Friend With Cancer
We often feel unsure about what to say to a friend with a serious illness, so we fall back on clichés. Here are some better ways to help from people who've been through it.
Why Scientists Put Tiny 3-D Glasses on a Praying Mantis
animals.howstuffworks.com/insects/tiny-3d-glasses-praying-mantis.htm
have determined mantises use stereopsis to see the world. Learn more about mantises with 3-D glasses in this HowStuffWorks Now article.
NFL Mascots Quiz
play.howstuffworks.com/quiz/nfl-mascots-quiz
These wacky characters prowl the sidelines during pro football games. How much do you know about NFL mascots? Take this quiz to find out.
Could Our Spacecraft Accidentally Ignite an Alien World's Entire Atmosphere?
science.howstuffworks.com/rockets-accidentally-ignite-alien-world-atmosphere.htm
Outer planets in our solar system have atmospheres made up of flammable chemicals that can cause explosions on Earth. Could a rocketship, or electric spark, ignite them?
10 Awesome Uses for Duct Tape
home.howstuffworks.com/home-improvement/home-diy/projects/duct-tape-uses.htm
Whether it's getting rid of a wart, protecting your boots from the elements or crafting roses, duct tape is up to the challenge. Duct tape even played a supporting role on the Apollo 13 lunar mission.
A Greenland Shark Living Today Could Have Been Alive in 1620
animals.howstuffworks.com/fish/sharks/greenland-shark.htm
This denizen of the frigid deep not only lives a crazy long life, it also can grow up to 24 feet in length and eating its flesh can make humans "shark drunk."
Binaural Beats: Does This Auditory Illusion Really Calm Your Brain?
science.howstuffworks.com/life/inside-the-mind/human-brain/binaural-beats.htm
This new form of sound therapy takes advantage of the fact that a different frequency in each ear yields a third frequency that can allegedly calm you down or improve your focus. Does it really work? Our writer tried it out.