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What causes the sound of a heartbeat?
health.howstuffworks.com/human-body/systems/circulatory/sound-of-heartbeat.htm
We're all familiar with the sound of a heartbeat: lub-dub, lub-dub. Learn what causes the sound of a heartbeat and why yours might sound different.
Why could China's Three Gorges Dam cause an environmental disaster?
science.howstuffworks.com/environmental/green-science/three-gorges-dam-disaster.htm
The Three Gorges Dam could very well lead to an environmental disaster for China. Learn about the Three Gorges Dam.
Worm Activities
lifestyle.howstuffworks.com/crafts/animal-crafts/worm-activities.htm
Ready to get dirty? Dig into these great worm activities, which will teach you all about how earthworms live.
Stretch Marks
health.howstuffworks.com/skin-care/problems/beauty/stretch-marks.htm
Stretch makes are a common beauty skin problem. Learn about how stretch marks work at HowStuffWorks.
How Sliding Puzzles Work
entertainment.howstuffworks.com/puzzles/sliding-puzzles.htm
Sliding puzzles involve moving pieces around a board to reveal an image or achieve a goal. Learn how sliding puzzles work at HowStuffWorks.
How Quinceañeras Work
people.howstuffworks.com/culture-traditions/cultural-traditions/quinceanera.htm
Quinceañeras celebrate Hispanic girls' transition to womanhood and official entrance into society. What makes them different from run-of-the-mill birthday parties?
10 Tax Benefits of Owning a Historic Property
home.howstuffworks.com/real-estate/buying-home/10-tax-benefits-of-owning-a-historic-property.htm
What are some tax benefits you could receive by owning one of these properties? Visit HowStuffWorks.com and check out 10 tax benefits of owning a historic property.
15 League of Legends Tips for Beginners
electronics.howstuffworks.com/15-league-of-legends-tips-for-beginners.htm
Master League of Legends with 15 beginner tips. Level up your skills, impress teammates, and leave "uber-noob" status behind. Get started now!
Can You Get More Than 11 Right on This Astronomy Quiz?
play.howstuffworks.com/quiz/can-you-get-more-than-11-right-on-this-astronomy-quiz
Does the solar system fill you with wonder? Are you an amateur stargazer fascinated by celestial bodies? Show off your knowledge of the universe with an out-of-this-world astronomy quiz!
10 Critical Pieces of Motorcycle Body Armor
What are the most important kinds of motorcycle body armor? Read about 10 critical pieces of motorcycle body armor at HowStuffWorks.