• What happens to old train tracks?
  • What is a rail trail?
  • How many miles of rail trails are there in the United States?
Find it out

What nonprofit organization helps communities convert abandoned railways into rail trails?

Test your knowledge
  • Why did castles have moats?
  • Did all moats have water?
  • Did moats have alligators?
Find it out

What might a castle owner have to build to control the level of water in a moat?

Test your knowledge
  • How is yogurt made?
  • Is yogurt healthy?
  • What kinds of bacteria are in yogurt?
Find it out

Which of the following is NOT an animal whose milk might be used to make yogurt?

Test your knowledge
  • Why is Memorial Day a holiday?
  • When is Memorial Day?
  • How do people celebrate Memorial Day?
Find it out

If Memorial Day still honored only those who died during the Civil War, it might still be known by what original name?

Test your knowledge
  • Do fish swim in schools in the summer?
  • What's the difference between shoaling and schooling?
  • Why do fish swim in schools?
Find it out

There usually needs to be at least how many fish swimming together in the same direction to be considered a school?

Test your knowledge

What Are You Wondering?

Join in the Wonder Creation

Make YOUR wonder a wonderful reality!

10,675

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

Latest from the Wonder Bank

  • is reincarnation real
    viviana magana
  • is reincarnation real
    viviana magana
  • Why do cats purr?
    Anita Weber
  • Why do cats purr?
    Anita Weber
  • Why the storm is accompanied by thunder and lighting?
    Aron Kraus
  • Why the storm is accompanied by thunder and lighting?
    Aron Kraus
  • when will the earth's ozone layer be fixed?
    David he
  • when will the earth's ozone layer be fixed?
    David he
  • how to notice the difference between real and fake diamond rings
    rebecca sweeny
  • how to notice the difference between real and fake diamond rings
    rebecca sweeny
  • why do we need oxgen to live
    razzor donutverc
  • why do we need oxgen to live
    razzor donutverc
  • Do you dream when you're dead?
    Rachel McOuat
  • Do you dream when you're dead?
    Rachel McOuat
  • how do illusionist show you such amazing feats that ordinary people can't do?
    elsa drew
  • how do illusionist show you such amazing feats that ordinary people can't do?
    elsa drew
  • where is hogwarts?
    elsa drew
  • where is hogwarts?
    elsa drew
  • Can i go to hogwarts?
    Emily Lawrence
  • Can i go to hogwarts?
    Emily Lawrence
  • Is witchcraft real?
    alisin thornsberry
  • Is witchcraft real?
    alisin thornsberry
  • Who is the ladest inventor?
    Isabella lozano
  • Who is the ladest inventor?
    Isabella lozano
  • Do you have an innie or an outie?
    sam cat
  • Do you have an innie or an outie?
    sam cat
  • I wonder why people have stereotypes?
    Isabelle Lamont
  • I wonder why people have stereotypes?
    Isabelle Lamont
  • Why do fish live in water?
    jacob pihama
  • Why do fish live in water?
    jacob pihama
View all questions in the Wonder Bank

Top Nominated Wonder Questions:

  • +991

    How can humans talk?

    nicki lamenta

  • +963

    Is the Five Second Rule Really True?

  • +939

    How did god make himself

    Amelia Urea it's o

  • +789

    Why can't we remember being babies?

    Breana

  • +734

    Is our blood in our body blue?

    Zuri Cotton

  • +722

    Is there really an orange zebra?

    Deana Yordy

Vote for wonder nominees

Where are You Wondering?

Discover Wonder Hotspots nearby and join!

EXPLORE WONDER HOTSPOTS

Wonder Guides

Hankins Family

Woodland Litter Critters ABC by Patience Mason

Books friends are the very best friends.Just a week ago, my good book friend introduced me to Patience Mason as Teri knows of my interest in ABC books, particularly when teaching classification as a rhetorical mode (a post for anot

Edwards Family

Is it raining resources?

Since it is raining outside today, I decided to go to one of my favorite resource sites to do a search for “rain” to see what I could find!The resources and ideas just flooded in …A few of them were the ones I expected …But some were so much more …Here are just a few of the many resources found when I searched 

Edwards Family

What did you do today that your students will remember?

While I was attending the NCFL Conference, someone asked me if I knew the Wonder of the Day from Wonderopolis that day ….I had to sadly admit that I did not know …But I quickly found out:While in a 4th grade classroom today, I gave an instruction to students getting

LEARN FROM WONDER GUIDES

Explore the World of Wonders

Discover the latest Wonders from TECHNOLOGY: Exercise, Transportation, Railroad, Technology, Locomotive, Automobile, and more

Image #3

Can Plants Eat Insects?

When you think of a jungle adventure, what comes to mind? Swinging around from tree to tree on vines? Gorgeous birds flying through the air? Monkeys and other exotic creatures prowling through the …

Image #15

What Is Your Secret Superhero Identity?

View the "Try it out" section.…

Image #36

How Did the Teddy Bear Get Its Name?

The teddy bear is named after U.S. President Theodore “Teddy” Roosevelt.In 1902, President Roosevelt participated in a bear-hunting trip in Mississippi…

Image #38

Why Do Catfish Have Whiskers?

Unlike cats and dogs, whose whiskers are made of hair, catfish have special whisker-like feelers made of skin. These sensitive feelers are called “barbels…

Wonder Stream

Spread the Joy of Wonder

Wonderopolis Widget

Interested in sharing Wonderopolis® every day? Want to add a little wonder to your website? Help spread the wonder of families learning together.

Add widget
×

Spread the Joy of Wonder

Wonderopolis Widget

Interested in sharing Wonderopolis® every day? Want to add a little wonder to your website? Help spread the wonder of families learning together.

Add widget