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Did an Eye Deformity Affect da Vinci's Painting?
history.howstuffworks.com/historical-figures/did-eye-deformity-affect-da-vincis-painting.htm
Leonardo da Vinci may have had an eye condition called exotropia. HowStuffWorks takes a look.
The Memorable Mnemonics Quiz
people.howstuffworks.com/memorable-mnemonics-quiz.htm
Mnemonic devices are little tricks - like acronyms and phrases - that help us memorize important info. Learn some cool mnemonics with this quiz.
Earth's Oldest Color Was Pink
science.howstuffworks.com/life/cellular-microscopic/earths-oldest-color-was-pink.htm
Scientists have found that ancient fossilized chlorophyll was dark red and purple in its concentrated form, which means that when diluted by water or soil, it would have lent a pink cast to earth and sea.
Does Caffeine Increase — or Decrease — Appetite?
recipes.howstuffworks.com/food-science/does-caffeine-increase-or-decrease-appetite.htm
Does caffeine in your morning joe increase or decrease your appetite? HowStuffWorks looks at several studies and breaks down the findings.
The Ultimate Halo Quiz
play.howstuffworks.com/quiz/halo-quiz
This Ultimate Halo Quiz will test your knowledge of this popular video game. Check out the Halo Quiz to get started.
Ploonets: When Moons Become Planets
science.howstuffworks.com/ploonets.htm
Moons of giant planets outside the solar system may be pushed out of their orbits and begin to circle their stars separately. HowStuffWorks takes a look.
What Does the Speaker of the House Do?
people.howstuffworks.com/what-does-speaker-of-house-do.htm
The speaker of the House occupies a central role in our government, but what exactly does the job entail?
Hiroshima Shadows Preserve One of History's Darkest Moments
history.howstuffworks.com/world-war-ii/hiroshima-shadows.htm
One of the most haunting images of World War II is the "human shadow" etched into the stone steps of the City of Hiroshima branch of Sumitomo Bank.
Air Pollution Kills 5.5 Million Per Year, Half in China and India Alone
science.howstuffworks.com/environmental/green-science/air-pollution-kills.htm
Millions of people die every year because of poor air quality, new international research finds. That number is expected to rise in coming years.
Snallygaster: The Gruesome Cryptid With a Silly Name
science.howstuffworks.com/science-vs-myth/strange-creatures/snallygaster.htm
The Snallygaster is a bizarre and downright terrifying cryptid said to haunt the skies of Maryland. Described as a winged creature with half bird features and half reptile characteristics, this beast has been part of local folklore for centuries.