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Can humans regrow fingers?
health.howstuffworks.com/human-body/systems/musculoskeletal/extracellular-matrix.htm
Fetuses can regrow almost anything that gets damaged while in the womb. Children up to the age of two have been known to regrow fingertips with no outside help. And at least one person has regrown a fingertip with the help of a substance extracted from pig bladders.
How Hitch Locks Work
auto.howstuffworks.com/auto-parts/towing/equipment/hitch-accessories/hitch-locks.htm
Hitch locks can provide you with peace of mind when you're towing. Learn all about hitch locks at HowStuffWorks.
How Trojan Horses Work
computer.howstuffworks.com/trojan-horse.htm
A Trojan horse is a program that looks helpful but actually lets a cracker take over your computer. Find out more about a Trojan horse.
Why do a child's bones heal faster than an adult's?
health.howstuffworks.com/human-body/systems/musculoskeletal/children-bones-heal-faster.htm
To heal bones faster, you might want to revert to childhood. But why do a child's bones heal faster than an adult's, anyway? Let's learn about bones.
Can I buy an electric car at Sam's Club?
auto.howstuffworks.com/fuel-efficiency/hybrid-technology/sams-club-electric-car.htm
Sam's Club, surprising, is offering several electric car promotions. See what it takes to get an electric car at Sam's Club.
Heart Pictures
health.howstuffworks.com/human-body/systems/circulatory/heart-pictures.htm
Take a look at these heart pictures to learn about the different parts of the heart and more. See our heart pictures to learn more.
Engine Performance Quiz
play.howstuffworks.com/quiz/engine-performance-quiz
Can you tell the difference between a camshaft and a stick shift? You will once you take the engine performance quiz. See if you know what makes your car get up and go.
How Does a GFCI Outlet Work?
home.howstuffworks.com/question117.htm
In my bathroom there is a plug that has a "Test" and a "Reset" button. When I push the "Test" button, it cuts off the current to the outlet. What is this? How is it different from the fuse in the fuse box?
Stored Energy Methods (Other Than Rechargeable Batteries)
science.howstuffworks.com/environmental/energy/question247.htm
One way to store energy is to use a battery, but what other ways can we store energy? Learn about different ways to store energy at HowStuffWorks.
Merkava Main Battle Tank
science.howstuffworks.com/merkava.htm
The Merkava Main Battle Tank takes the best features from American, British and Soviet tanks and has been Israel's main line of defense since 1979.