• When was pinball invented?
  • Who made the first pinball machine?
  • Are pinball machines still manufactured today?
Find it out

How many pinball machine manufacturers are there today?

Test your knowledge
  • Can frogs prevent milk from spoiling?
  • What are peptides?
  • Could frogs help scientists develop new drugs in the future?
Find it out

Scientists may be able to use frog peptides to create new what?

Test your knowledge
  • Are all letters created equal?
  • What are consonants?
  • How many vowels are there?
Find it out

How many consonants are there in the English alphabet?

Test your knowledge
  • Do you prefer carats or karats?
  • What is the difference between a carat and a karat?
  • What is 24-karat gold?
Find it out

Two carats equal how many milligrams?

Test your knowledge
  • How do you make slime?
  • Is there more than one way to make slime?
  • What are common slime activators?
Find it out

White school glue is an example of a what, which consists of long chains of monomers?

Test your knowledge
  • Where in the world is Slovenia?
  • What country was Slovenia formerly a part of?
  • What is the topography of Slovenia like?
Find it out

What is the capital of Slovenia?

Test your knowledge
  • How big can a tarantula grow?
  • Where do tarantulas live?
  • Are all tarantulas venomous?
Find it out

Tarantulas can be found on every continent except for which one?

Test your knowledge

Where are You Wondering?

Discover Wonder Hotspots nearby and join!


Wonder with Olivia

Student Wonder Ambassador


Wonder Buddy

Always be on the lookout for the presence of WONDER!E.B. White


This back to school blog post is for the teachers of my little sister, Charlotte. On August 31st, she will start kindergarten. Since I won't be at the school where Charlotte is going, I thought I would write a list of "Char-isms" for her teachers, in case they need help while I am not there because let's face it, she IS sort of a handful. Hehehehehe!

View all blog Posts

What Are You Wondering?

Join in the Wonder Creation

Make YOUR wonder a wonderful reality!


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

Latest from the Wonder Bank

  • Can we see sunlight?
  • Why Fortnite Is The Highest Grossing Game Ever
  • Who came up with talking?
  • Who really dicovered America
  • What is the hardest estimated trick in soccer
  • What is hell and the devel
  • why haven't cows been domesticated like horses?
  • Are Fairy's Real
  • Why When You Live in a Country You only want to know about it??
  • Is God Real????
  • What do glial cells in the brain look like?
  • Is a thumb a finger?
  • why was money invented ?
  • who invented the Calculator
  • who invented bean bags
  • where is atlantis
  • Why can't dogs speak English?
  • Who is more powerful;king or queen?
  • What is the longest word ever and what does it mean?
  • What was the first language?
  • Why does your belly rumble
  • Why do schools not change much? But the world has and is changing so rapidly?
  • how do t-rex catch their food?
  • How can we live on Mars?
  • Why do pitbulls have musels instead of other dogs
  • How did the earth form?
  • nawhals
  • what is a marine layer
  • Are we going to run out of water soon?
  • why are videogames so addicting?
View all questions in the Wonder Bank

Top Nominated Wonder Questions:

  • +10486

    Do girls remember their dreams more often than boys and if yes, why?

    Lance — Louisville, KY

  • +9426

    how was water created


  • +7406

    Can you mix water and air completly?


  • +58

    Why do Olympians bite their medals?

    Sam — Glen Allen, VA

  • +46

    How does weeds grow?

    Rafiul — Sydney, AL

  • +38

    How many animals are on earth?

    helaina — clearwater, FL

Vote for wonder nominees

Explore the World of Wonders

Discover the latest Wonders from TECHNOLOGY: Entertainment, History, Technology, Pinball, Machine, Arcade, and more

Image #13

Who Invented the Candy Bar?

Do you like to go trick-or-treating at Halloween? Of course! Who doesn't? It's so much fun to dress up as a clown, a superhero, a ghoul, or a tiger and parade around the neighborhood, begging for swee...

Image #12

Who Came Up With Chewing Gum?

If you had a choice between chewing on a wad of tree sap, a mouthful of rubber bands or a stick of gum, which would you choose? If the answer seems obvious, you may be surprised. All three have more i...

Image #43

Where Do Recycled Items Go?

If your city allows you to throw all of your recyclable materials in the same bin, then your city uses a process called “single-stream recycling." Single-stream recycling means there is no need to sep...

Image #63

How Does the Internet Work?

The Internet is made up of computers all over the world. Each of these computers is connected by phone lines or cables…or even wireless connections!

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

Wonderopolis Partners & Sponsors


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