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Binaural Beats: Does This Auditory Illusion Really Calm Your Brain?
science.howstuffworks.com/life/inside-the-mind/human-brain/binaural-beats.htm
This new form of sound therapy takes advantage of the fact that a different frequency in each ear yields a third frequency that can allegedly calm you down or improve your focus. Does it really work? Our writer tried it out.
What Is Citric Acid, and Is It Safe?
recipes.howstuffworks.com/food-science/citric-acid.htm
HowStuffWorks finds out what citric acid is, how it is made and whether or not it is safe.
6 Common Hallucinations and What They Tell Us
science.howstuffworks.com/life/inside-the-mind/human-brain/hallucinations.htm
People who hallucinate typically see, hear, feel, smell or otherwise experience things that simply aren't real. Often, these sensory fake-outs indicate a serious medical condition.
How Wine, Art and Diamonds Defy the Laws of Economics
money.howstuffworks.com/veblen-goods.htm
HowStuffWorks looks at the concept of Veblen goods, where demand goes up when the price does. But why?
Can You Figure Out the NFL Team From a Hint?
play.howstuffworks.com/quiz/can-you-figure-out-the-nfl-team-a-hint
Every team has its milestones, famous players and events. But can you guess the NFL team after one famous hint? In this quiz, we're going to test your knowledge of all the NFL hallmarks!
The Hardest True or False General Knowledge Quiz You'll Take This Year
play.howstuffworks.com/quiz/the-hardest-true-false-general-knowledge-quiz-youll-take-this-year
Think you are a genius when it comes to general knowledge? See if you can take on 50/50 odds with this HowStuffWorks quiz!
Can You Get a Perfect Score on This Optical Illusions Quiz?
play.howstuffworks.com/quiz/can-you-get-a-perfect-score-this-optical-illusions-quiz
The question is, can we trick your eyes to believe that the size of an object is different than it is? We'll be transparent -- we'll fool you with illusions, weird perspectives and horizon lines. Think you can get all of them right? Then start now.
Why the 1933 London Tube Map Is Still Considered Design Genius
science.howstuffworks.com/engineering/civil/london-tube-map.htm
Before 1933, getting around London on the massively confusing Tube system was a nightmare. That's when draftsman Harry Beck stepped in and revolutionized map design.
What makes your arms, legs and feet fall asleep?
health.howstuffworks.com/human-body/parts/question552.htm
What makes your arms, legs and feet fall asleep? Basically, your nerves go a little haywire when your limbs fall asleep. Learn why.
Do the Planets Ever Actually Align?
science.howstuffworks.com/planetary-alignment.htm
If you imagine the eight major planets in a single line stretching out from the sun, this alignment occurs roughly every 13.4 trillion years. And our solar system is 4.5 billion years old.