Knowledge

Do you love to learn? If so, you’ve come to the right place. From mind-blowing facts to grammar mistakes to psychology terms, get ready to exercise your brain.

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    This Is Why You Only See No. 2 Pencils

    In all likelihood, if you rummaged through any given school desk in the U.S., the first pencil you'd encounter would...


    The 100 Greatest Compliments You Could Ever Give or Receive

    A little love goes a long way with these uniquely personal compliments


    This Is Why We Use %$@#! to Represent Curse Words

    You know exactly what those random symbols mean, but they weren't always used to hide offensive language.


    The Real T. Rex Sound Is More Unsettling Than You Think

    Paleontologists believe that the real T. rex sound was nothing like the roar you hear in the movies. But it's...


    This Is Why You Never See B Batteries

    The most common batteries you encounter are AA, AAA, C and D. Why are there no B size batteries?



    The 50-Star American Flag Began as a High School Project—and It Only Got a B

    "Get it accepted into Washington...and I might consider changing your grade.”


    Here’s How Your Favorite Carnival Games Are Rigged—And Tricks to Beat the System

    These rigged carnival games are engineered to mess with your brain, your aim and your wallet. But with a little...



    12 Surprising Facts About Competitive Eaters

    Prepare to enter the world of competitive eating. Word of caution: You may want to do so on an empty...



    10 Self-Defense Tips That Could Save Your Life

    When the unthinkable happens and you're faced with an attacker, knowing the right moves ahead of time could be key...


    Can You Solve the World’s First Crossword Puzzle?

    Up for a challenge? Take a stab at completing the first crossword puzzle ever published.


    This Is the Smartest Zodiac Sign, According to an Astrologer

    Are you among the smarty-pants of the bunch? Our astrologer explains which is the smartest zodiac sign and which signs...



    10 Crazy Things You Can Only Find in Japan

    If you spot blue traffic lights and sweet potato Kit Kats, you're probably in Japan.

    Why Do We Say “Geronimo” When We Jump Off Stuff?

    Screaming “Aubrey!” just doesn’t feel right. Here’s the history behind the famous “Geronimo” saying.


    This Is the Real Reason Why Wedding Cakes Are White

    Wedding-cake history involves a lot more than taste tests and good-luck traditions. Here's how this wedding staple started.


    Here’s Why There’s a 57 on Your Heinz Ketchup Bottle

    No, there aren't 57 types of Heinz ketchup.


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    9 Royal Ghosts That Still Haunt Britain to This Day

    From Elizabeth I to Henry the VIII still hobbling about Windsor Castle, royal ghosts have been making the rounds about...


    Here’s Why You Never Got an E on Your Report Card

    A, B, C, D, F—wait, what? Why is there no E in the grading system?


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    There’s a Very Specific Reason Why the Oval Office Is an Oval

    It's not just for the sake of alliteration.

    9 Great Words You Never Knew Were Gaelic

    More than 1.3 million Irish citizens still speak Gaelic—and whether you know it or not, you do too! Here are...


    Here’s the Meaning of the Numbers in Your Social Security Number

    Tell us your Social Security number, and we'll tell you what state it was issued in, at least...


    Shakespeare’s Longest Word Is a Whopping 27-Letters Long

    Good luck finding an actor who can pronounce this.


    If You Have One of These Rare Quarters, It Could Be Worth $2.5 Million

    Want to make some serious cash in no time? Check your coin purse!


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    This Is the Rarest Hair Color and Eye Color Combination in Humans

    If you have the rarest hair color and eye color combination, you're one in a million—or more!


    If Teresa’s Daughter Is My Daughter’s Mother: Solve the Riddle

    If Teresa's daughter is my daughter's mother ... just what is this family dynamic riddle? See if you can figure...