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What are carotenoids?
health.howstuffworks.com/wellness/food-nutrition/vitamin-supplements/what-are-carotenoids.htm
What are carotenoids? Click here to learn exactly what carotenoids are.
Who's Your Daddy? The History of Paternity Testing
science.howstuffworks.com/life/genetic/history-paternity-testing.htm
Before the widespread use of DNA, establishing the paternity of a child was a tricky business. Ever heard of the oscillophore?
The Cerebellum Is the Body's Little Brain
health.howstuffworks.com/human-body/systems/nervous-system/cerebellum.htm
The cerebellum controls voluntary movements like posture, balance, coordination and speech. HowStuffWorks looks at this amazing part of the brain.
What Causes the Tectonic Plates to Move?
science.howstuffworks.com/environmental/earth/geology/plate-tectonics.htm
Discover the origins of the continental drift theory and how scientists explain these geologic phenomena.
9 Big Hairy Facts About Gorillas
animals.howstuffworks.com/mammals/gorilla.htm
HowStuffWorks looks at the elusive and powerful gorilla, of which there are two species, the Eastern gorilla and the Western gorilla.
How Manifest Destiny Stretched the U.S. From Sea to Shining Sea
history.howstuffworks.com/american-history/manifest-destiny-america.htm
President James Polk put the philosophy of Manifest Destiny into action. HowStuffWorks looks at the ideology that helped create the United States.
What's the Difference Between a Samurai and a Ninja?
people.howstuffworks.com/ninja-samurai-difference.htm
Movies often pit dark-robed, masked ninjas against elite samurai warriors. HowStuffWorks looks at how accurate that take is on these two fighters.
How are viruses, viroids and prions related?
science.howstuffworks.com/life/cellular-microscopic/viruses-viroids-and-prions-related.htm
Viruses, viroids and prions are microscopic, infectious particles with a common, despicable goal - but the way each goes about achieving that goal is different.
How Will You Do on This Tough, Irritating Geography Quiz?
play.howstuffworks.com/quiz/the-hardest-most-irritating-geography-quiz-youll-take-today
Our world is full of fantastic and interesting mountains, lakes, cities, and other geographical landmarks. Grab your passport and see if you can master this tough and strange geography quiz!
Can You Pass This Canadian General Knowledge Quiz?
play.howstuffworks.com/quiz/can-you-pass-this-canadian-general-knowledge-quiz-learn
The land of snow and maple leaves - sometimes! Canada is a beautiful nation with lots of history and some fun facts. Think you know about the nation and its ways? Take the quiz to find out!