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  Why Do Birds Fly in a V?

  What’s that up in the sky? Is it a plane? No, it’s today’s Wonder of the Day!

  #28

  Why Do Birds Fly in a V?

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  What Causes a Shooting Star?

  Today’s Wonder of the Day features some real rock stars that are out of this world!

  #11

  What Causes a Shooting Star?

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  Why Does Hair Turn Gray?

  There’s nothing black and white about today’s Wonder of the Day!

  #6

  Why Does Hair Turn Gray?

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  Why Are Chili Peppers So Spicy?

  Join us as we sink our teeth into the spicy world of chili peppers — and turn up the heat in Wonderopolis!

  #50

  Why Are Chili Peppers So Spicy?

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  Where in the World Is Kolkata?

  Join us in Wonderopolis today for a visit to one of the most populous countries in the world!

  #2022

  Where in the World Is Kolkata?

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  Why Does Jell-O Jiggle?

  Join us in Wonderopolis today as we watch it wiggle!

  #14

  Why Does Jell-O Jiggle?

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  Why Is April 11, 1954, the Most Boring Day in History?

  This Wonder of the Day is anything but BORING!

  #2772

  Why Is April 11, 1954, the Most Boring Day in History?

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  What Are Your Odds Of Winning the Lottery?

  Trying to guess what today’s Wonder of the Day is going to be about? You’ve got about a one in a million shot of guessing correctly!

  #335

  What Are Your Odds Of Winning the Lottery?

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  What Is a Prime Number?

  Today’s mathematical Wonder of the Day may have you counting 2, 3, 5, 7, 11, 13, 17, 19, 23, 29…

  #190

  What Is a Prime Number?

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  Who Invented Rock and Roll?

  Are you ready to jam? You might want to turn today’s Wonder of the Day up to 11!

  #2000

  Who Invented Rock and Roll?

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  Why Do Some Years Leap Ahead?

  Today’s Wonder of the Day only comes around once every four years. Don’t miss it!

  #514

  Why Do Some Years Leap Ahead?

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  Can You Survive the Bermuda Triangle?

  Does geometry sound intimidating to you? Today’s Wonder of the Day features a triangle many people are afraid of!

  #1294

  Can You Survive the Bermuda Triangle?

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  What Is a Tsunami?

  Surfers beware! Today’s Wonder of the Day features a wave that you won’t want to catch. Find out what happens when the Earth quakes and the oceans roar…

  #160

  What Is a Tsunami?

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  How Do Elevators Work?

  Today’s Wonder of the Day really has its ups and downs!

  #1751

  How Do Elevators Work?

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  What Is the Largest Snake?

  We’ve been worried that an all-new and really LONG Wonder of the Day would slither into Wonderopolis today!

  #674

  What Is the Largest Snake?

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  Who Made the American Flag?

  Get ready! Today’s Wonder of the Day might leave you seeing stars…and stripes…forever!

  #274

  Who Made the American Flag?

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  What Are the 12 Days of Christmas?

  We’ve got a dozen reasons why you should visit Wonderopolis today!

  #1816

  What Are the 12 Days of Christmas?

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  What Was the Lewis and Clark Expedition?

  Pack your bag for a long journey. Today Wonderopolis goes exploring with two pioneers who blazed a new path west!

  #223

  What Was the Lewis and Clark Expedition?

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  Where Is the Largest Library in the United States?

  Be sure you “check out” today’s Wonder of the Day!

  #568

  Where Is the Largest Library in the United States?

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  How Does the Binary System Work?

  We need help deciphering today's Wonder of the Day—it's all ones and zeroes!

  #1869

  How Does the Binary System Work?

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