• What was the Kraken?
  • What creature might the Kraken have been based upon?
  • Who wrote a famous sonnet about the Kraken?
Find it out

This Wonder was mostly about...

Test your knowledge
  • How do you get the word out?
  • What is guerilla marketing?
  • Can you create your own advertisement?
Find it out

Which of the following is NOT an example of guerilla marketing?

Test your knowledge
  • When does a cut need stitches?
  • What are sutures?
  • Can stitches come out on their own?
Find it out

Stitches are just loops of thread called ___________.

Test your knowledge
  • Are babies born to love music?
  • What can babies hear before they're born?
  • Does being exposed to music help babies learn?
Find it out

According to one study and this Wonder, which effect did music have on babies in intensive care units?

Test your knowledge
  • What is a black hole?
  • How does a black hole form?
  • How is a black hole like a vacuum?
Find it out

The center of a black hole is called a _____________.

Test your knowledge

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

Latest from the Wonder Bank

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    Eva Marie
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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?


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Explore the World of Wonders

Discover the latest Wonders from SOCIAL STUDIES: Alfred Tennyson, Clash of the Titans, folk tales, German, giant squid, Kraken, and more

Wonderopolis #4

Are You a Good Observer?

Have you ever had a friend claim that he can't see the forest for the trees? If so, you may have WONDERed what this curious phrase means. If you can see the trees, how can you not see the forest?

Wonderopolis #10

Can You Travel the World Without Leaving Home?

Have you ever WONDERed what it's like to ride on a dog sled in the Arctic? Or dance the Flamenco in Spain? There are so many places to WONDER about in this great big world, and there are lots ways to...

Wonderopolis #2

How Do Streets Get Their Names?

When you hear Broadway, Abbey Road, and Bourbon Street, what comes to mind? Bright lights? The Beatles? Mardi Gras? They are some of the most recognizable streets in the world, and though you may neve...

Wonderopolis #22

How Can Spare Change Make a Big Difference?

Many children are already involved in fundraising through their schools, scouts and churches, but bringing philanthropy into the home makes giving back to your community a whole-family effort.

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