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If You Get 100% on This Car Symptoms Quiz, You Probably Know More Than Your Mechanic
play.howstuffworks.com/quiz/you-get-100-this-car-symptoms-quiz-you-probably-know-more-your-mechanic
Consider yourself a gearhead? Are you the friend or relative everyone goes to with their car problems? Then why not take our car symptoms quiz for a test drive? We promise that we won't leave you stranded!
What are the Nazca lines?
science.howstuffworks.com/science-vs-myth/unexplained-phenomena/nazca-lines.htm
Long before crop circles captured the world's imagination, a Peruvian culture called the Nazca went about creating a series of intricate lines -- sometimes in the shapes of animals -- on the desert floor. But how'd they do it -- and why?
What happens when you don't brush your teeth?
health.howstuffworks.com/wellness/oral-care/products/when-you-dont-brush-teeth.htm
Humans haven't always been avid tooth brushers, so why do we have to do it now? Find out what happens when you don't brush your teeth.
How the Prosperity Gospel Works
people.howstuffworks.com/prosperity-gospel.htm
The prosperity gospel is one of the most popular forms of Christianity in the entire world. But where did it come from and how did it get so big? And why do critics say it gives a false picture of Christianity?
How Calories Work
health.howstuffworks.com/wellness/diet-fitness/weight-loss/calorie.htm
Calories -- people are constantly counting them and cutting them. At any given time, millions of people are trying to slim down. Learn all about calories and exactly how (and why) they affect your weight.
What Happens If a Woman Takes Viagra?
science.howstuffworks.com/science-vs-myth/what-if/what-if-woman-takes-viagra.htm
We all know what Viagra does and why men use it - not to mention how much money this particular prescription drug has made over the years. But does it improve sexual health for women, too?
Inside Unit 731, Japan's Gruesome WWII Human Experiment Program
history.howstuffworks.com/world-war-ii/unit-731.htm
Unit 731 was a covert biological warfare research unit of the Imperial Japanese Army during WWII. Some of the most heinous war crimes ever were committed there. Why is it still so shrouded in secrecy?
Are there more floods now than there used to be?
science.howstuffworks.com/nature/natural-disasters/question665.htm
I read 'How Floods Work,' but I still have a question: Why are there so many more floods now? It seems like there are floods all the time, and it didn't used to be that way. Is it raining more?
How Blue Screens Work
entertainment.howstuffworks.com/blue-screen.htm
When an actor dangles over an incredibly deep river gorge, blue screen photography is what makes it look real. Find out how the blue screen technique works and why it's so convincing.
What If We Ran Out of Minerals?
science.howstuffworks.com/science-vs-myth/what-if/what-if-ran-out-minerals.htm
If minerals make up so much of the Earth, why would we ever face shortages? The availability of the resources we use to create products often depends more on our priorities than the planet's supply.