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How an Air-cooled Engine Works
auto.howstuffworks.com/air-cooled-engine.htm
Most modern cars use a water-cooled engine with a radiator, hoses and a water pump. Is an air-cooled engine a better idea?
How Online Banking Reward Programs Work
money.howstuffworks.com/personal-finance/online-banking/online-banking-rewards-programs.htm
Online banking rewards programs often offer cash back opportunities. Learn more about how online banking rewards programs work at HowStuffWorks.
The U.S. Air Force Dropped an Atomic Bomb on South Carolina in 1958
history.howstuffworks.com/american-history/nuclear-bomb-air-force-south-carolina-1958.htm
In the 1950s a nuclear bomb was accidentally dropped on rural South Carolina. Learn more about this weird history in this HowStuffWorks article.
How the Environment Has Changed Since the First Earth Day 51 Years Ago
It's been 51 years since the first Earth Day, and while progress has been made in some areas, humanity still has had a major impact on the planet.
Alkali Metals: Elements in the First Column of the Periodic Table
science.howstuffworks.com/alkali-metals.htm
Although the term might be unfamiliar, you know all about alkali metals. Ever used salt or eaten a banana? So, what special properties do these elements have?
Why Are You So Tired? 5 Most Common Sleep Mistakes
health.howstuffworks.com/mental-health/sleep/disorders/so-tired-5-most-common-sleep-mistakes.htm
HowStuffWorks looks at the most common sleep mistakes and how to fix them.
What Would Happen if a Solar Storm Hit Earth?
science.howstuffworks.com/science-vs-myth/what-if/what-if-solar-flare-hit-earth.htm
Solar flares disrupt Earth's magnetic field when they hit the planet, causing issues with power and GPS. But if a major solar storm hit Earth, the consequences could be catastrophic.
Why Photosynthesis is Important
science.howstuffworks.com/science-vs-myth/what-if/what-if-photosynthesis-stopped.htm
Remember learning about photosynthesis when you were a kid? Let's pretend for a moment that this vital process could somehow permanently stop. How tough would it be to continue to live on this Earth?
Test Your Vocabulary With This Quiz!
play.howstuffworks.com/quiz/you-pass-this-difficult-vocabulary-test-you-deserve-a-phd
Want to test your smarts without the headache of a graduate program? Take this vocabulary quiz, and let's find out if you're smarter than a Ph.D. student.
How Well do You Know Your '90s Trends and Fads?
play.howstuffworks.com/quiz/how-well-do-you-know-your-90s-trends-fads
Do you still remember the most prevalent fads and trends of the 1990s? "No duh," you say? Then prove it. Go ahead and take our '90s fads and trends quiz now!