Wonderopolis
  • Are you an innie or an outie?
  • What purpose does the belly button serve?
  • Which type of belly button is most common?
Find it out

Which of the following is NOT transferred between a mother’s womb and a baby’s body via the umbilical cord during pregnancy?

Test your knowledge
  • Can you divide by zero?
  • Why is any number divided by zero undefined?
  • Will we ever be able to divide by zero?
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What happens as you divide a number by increasingly smaller numbers?

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  • Why do you say “trick or treat"?
  • What is “souling"?
  • Does everyone go trick-or-treating?
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The custom of trick-or-treating stalled during World War II because of rationing of what substance?

Test your knowledge
  • What was dancing mania?
  • What caused dancing mania?
  • Do people still get dancing mania today?
Find it out

What is cited by modern experts to be the most likely cause of dancing mania?

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  • What inspires you?
  • Do the same things inspire everyone?
  • Can you create inspiration?
Find it out

Which of the following is something you can do to try to manufacture inspiration?

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279,188

...Questions in the Wonder Bank and counting! Here are the latest...

Latest from the Wonder Bank

  • What is piragua?
    Wonder
    Published as Wonder of the Day #2812
  • how one dollar bill were made
    Micah
  • why is music such a popular topic
    jakob
  • why does when reading in dim light hurt your eyes
    sebastian
  • Who created the fire alarm
    Daxon
  • what are the best strategys in hockey
    luke
  • why do bubbles pop?
    Maria
  • what basically is Greek mythology
    David
  • i wonder why cats dont like dogs for a while until they have been with them for a long time
    Landon
  • Why do people have nightmares?
    Sylver
  • How do tornaoes form
    chace
  • When is the bed made
    Sophia
  • Why does lightning happen?
    Lily
  • How and when were the first volcanoes created
    Julia
  • why is there no cure to canser
    destini
  • why do you hold hands
    Shirley
  • Why do you fall in love
    Marinette
  • How do computers work?
    Julia
  • What do blind people see?
    Benny
  • is dance a real sport
    shirley
  • Why do people have crushes?
    Marinette
  • What Happended To DB Cooper?
    Andrew
  • how do hurcainnes get there name?
    aiyana
  • Why am I a god at Roblox?
    Carla
  • Why do people have crushes?
    MaKayla
  • how are glasses lens made?
    Paige
  • Why/ how do people come of with random names for things like a pencil?
    Shoto
  • Why do we need air to breath
    Katsuki
  • how do you get to heven
    Hailey
  • how is viruses created
    Hailey
View all questions in the Wonder Bank

Top Nominated Wonder Questions:

  • +58

    Why do Olympians bite their medals?

    Sam — Glen Allen, VA

  • +50

    What causes blindness?

    Katherine — Owatonna, MN

  • +46

    How does weeds grow?

    Rafiul — Sydney, AL

  • +38

    How many animals are on earth?

    helaina — clearwater, FL

  • +35

    Why does a slinky get tangled so easily and is so hard to untangle?

    Terry — Garner, NC

  • +34

    Why do we procrastinate?

    Evan

Vote for wonder nominees

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