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What's the Difference Between Ethyl Alcohol and Isopropyl Alcohol?
science.howstuffworks.com/difference-between-ethyl-and-isopropyl-alcohol.htm
The two different types of alcohol are commonly used in hand sanitizer today. But does one work better than the other?
What's earwax made of?
health.howstuffworks.com/human-body/parts/what-is-earwax-made-of.htm
Humans sure make a lot of earwax, but what's it made of? Learn what's in your earwax at HowStuffWorks.
Are manual transmissions really faster than automatics?
auto.howstuffworks.com/manual-transmissions-faster-than-automatics.htm
Manual transmissions used to accelerate faster than automatics, but is that still the case? Find out if manual transmissions are faster than automatics.
Is gasoline more dense in the morning?
auto.howstuffworks.com/fuel-efficiency/fuel-economy/gasoline-more-dense-in-morning.htm
Is gasoline more dense in the morning? Should you fill up before the afternoon? Find out at HowStuffWorks.
Do You Know the 35 Hardest Plurals in the English Language?
play.howstuffworks.com/quiz/do-you-know-the-35-hardest-plurals-the-english-language
Just add an "s" and a singular noun becomes a plural, right? Although for the most part, just adding an "s" holds true, but there are exceptions. Do you know them all?
10 Essential Tools of NASCAR Pit Crew Members
auto.howstuffworks.com/auto-racing/nascar/jobs/10-essential-tools-of-nascar-pit-crew-members.htm
Have you ever wondered about the essential tools of NASCAR pit crew members? Read about 10 essential tools of NASCAR pit crew members in this article.
How NASCAR's Car of Tomorrow Works
auto.howstuffworks.com/auto-racing/nascar/nascar-basics/nascar-car-of-tomorrow.htm
You may have heard about the NASCAR Car of Tomorrow, but how much do you really know about it? Learn about the NASCAR Car of Tomorrow at HowStuffWorks.
How Two-stroke Engines Work
science.howstuffworks.com/transport/engines-equipment/two-stroke.htm
A car engine uses a four-stroke cycle -- how can two strokes accomplish the same tasks? Learn all about the two-stroke engine, where it's used and how it compares to a four-stroke.
How the Gyroscope Works
science.howstuffworks.com/gyroscope.htm
Did you know that airplanes and space shuttles use the utterly low-tech gyroscope for navigation? Discover the secret behind gyroscopic motion!
What Is Gravity?
science.howstuffworks.com/environmental/earth/geophysics/question232.htm
Gravity is the force that causes two particles to pull towards each other. Learn about gravity and find out how Newton and Einstein explain gravity.