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Do You Have One of the 6 Rarest Eye Colors in the World?
health.howstuffworks.com/human-body/systems/eye/rarest-eye-colors.htm
All eye colors are an interaction of brown pigment and light, but some eye colors occur much less often than others. What is the rarest eye color in the world?
Exploring the Impact of the Industrial Revolution Factory System
history.howstuffworks.com/historical-events/industrial-revolution-factory.htm
Learn how the Industrial Revolution factory system revolutionized mass production and technology in the late 18th century and transformed manufacturing.
If a giraffe's neck only has seven vertebrae, how is it so flexible?
animals.howstuffworks.com/mammals/giraffe-neck.htm
A good portion of a giraffe's height comes from its statuesque neck. But how do these lanky creatures get their necks in such pretzel-like positions?
Piranha: Fish With a Vicious Reputation and Mixed Diet
animals.howstuffworks.com/fish/piranha.htm
Piranhas are some of the most feared fish in the world, but is their reputation for ferocity a bit overblown?
What Is ESP? How ESP Works
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/esp.htm
Have you ever had a dream that came true? Or called a friend at the exact moment he was calling you? Most of us have had some sort of paranormal experience. Is this evidence of the existence of ESP?
Lotus Sports Cars
auto.howstuffworks.com/lotus-sports-cars.htm
Lotus, founded by Britain's Colin Chapman, makes some of the finest sports cars in the world. Learn about the evolution of Lotus sports cars.
Cavities and Fillings 101
health.howstuffworks.com/wellness/oral-care/problems/cavity.htm
A fascinating article that describes how dental cavities and fillings work!
How the Physics of Football Works
entertainment.howstuffworks.com/physics-of-football.htm
There's a reason why some passes miss their target, and others land right in the receiver's hands -- it's physics! Take a look at the game from a whole new angle.
What Is Biodiesel?
auto.howstuffworks.com/fuel-efficiency/alternative-fuels/biodiesel.htm
Biodiesel turns biodegradable fats and oils into an alternative fuel for your car. Learn about biodiesel components, biofuel history and biodiesel pros and cons.
Can vitamins lower cholesterol?
The link between vitamins and cholesterol is complex. Learn how antioxidents in vitamins and minerals fight free radicals to keep your heart healthy.