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How Optical Illusions Work
science.howstuffworks.com/optical-illusions.htm
It's a young lady! It's an old woman! It's a blue dress! No, it's gold! Why are we fooled by optical illusions and what do they tell us about how the brain works?
Can You Identify These Big Cats?
play.howstuffworks.com/quiz/can-you-identify-these-big-cats
There are plenty of different big cats found throughout the world, but how well do you know them? Take this quiz if you believe that you can correctly identify them all!
Comic Book Supers: Can You Identify Which Are Heroes and Which Are Villains?
In the world of comics, you're either a hero or a villain. Unless you're an anti-hero like Deadpool. Or you flip-flop like Mystique. Or you were brainwashed like the Winter Soldier. Identifying all the heroes and villains in this quiz might be harder than it seems, but try it and see!
The Ultimate Spice Quiz
play.howstuffworks.com/quiz/the-ultimate-spice-quiz
Whether you love cooking or you simply love your plants, there are some spices you should definitely know about. Can you tell us the names of these spices from a clue and some pictures? Let's find out.
How Many Cattle Breeds Can You Identify?
play.howstuffworks.com/quiz/how-many-cattle-breeds-can-you-identify
Humans first domesticated cattle around 10,500 years ago, and now a wide variety of cattle breeds are reared for their milk, meat and hardworking capabilities. If you think you know your cattle breeds from Angus to Zebu just by looking, then mosey on into this quiz!
How Nurse Sharks Work
animals.howstuffworks.com/fish/sharks/nurse-shark.htm
Nurse sharks are mellow, sluggish sharks that hover above the ocean floor. See why nurse sharks don't have that much in common with great whites.
Inside "Twilight"
entertainment.howstuffworks.com/inside-twilight.htm
"Twilight" is the story of a teenage girl and her first love, who also happens to be a vampire. Go inside "Twilight."
How CIPA Works
science.howstuffworks.com/life/inside-the-mind/human-brain/cipa.htm
You might think that not being able to feel pain would be a blessing. No tears, no painkillers, no lingering aches. But really, not being able to feel pain is dangerous.
How Commercial Jingles Work
money.howstuffworks.com/commercial-jingle.htm
Commercial jingles are written about a product and, if done correctly, can stick in your head for days. Learn about the use of commercial jingles.
We'll Be Impressed If You Can Name Even 11 of These Trees From Their Leaves
If not for trees the world would be a much less scenic place, don't you think? They may not get the attention that flowers do but they still deserve recognition. Why not climb the branches of this quiz and see how many you recognize?