• Who invented dental floss?
  • Why is it important to floss your teeth daily?
  • What's the proper way to floss your teeth?
Find it out

Early dental floss was made of silk threads, whereas most modern dental flosses are made of what material?

Test your knowledge
  • Are insects edible?
  • Can any insect be eaten?
  • Which world cuisines feature insects on the menu?
Find it out

The consumption of insects as food is known as what?

Test your knowledge
  • Do all markers work on whiteboards?
  • Who invented dry-erase markers?
  • How can you remove stains from whiteboards?
Find it out

What type of non-permanent marker uses erasable ink that adheres to non-porous surfaces without binding to or being absorbed by them?

Test your knowledge
  • What is a root canal?
  • When is a root canal necessary?
  • Who can perform a root canal?
Find it out

Which of the following is NOT found in pulp tissue?

Test your knowledge
  • How old is tic-tac-toe?
  • What are some other names for tic-tac-toe?
  • How many possible winning combinations are there in tic-tac-toe?
Find it out

If you live in England, what might you call tic-tac-toe?

Test your knowledge
  • How did astronauts build a space station?
  • How long does it take the ISS to orbit Earth?
  • When did astronauts begin using the ISS?
Find it out

The International Space Station is similar in size to which of the following things?

Test your knowledge
  • What's so super about Super Bowl Sunday?
  • What is the most-viewed program in television history?
  • How much does Super Bowl commercial airtime cost?
Find it out

Approximately how much was a 30-second commercial during the Super Bowl in 2015?

Test your knowledge

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

  • how do jelly fish reverse age
    yahim morales
  • Why is smoke black?
    Isaac Santiago
  • Can you clone yourself?
    Bryn Baker
  • Can you make ice in one second?
    Bryn Baker
  • How did dinosuars really become extinct?
    Emma Baney
  • why do we have fingernails?
    Kirstin Diggins
  • why do most girls with brown hair have brown eyes
    Mareigha kee
  • What are cheese its?
    Cheese Mister
  • Are zombies really there
    Vishudh Sharma
  • What's empathy
    Emily DeVault
  • are tevys real
    cameron lane
  • Why is fnaf popular?
    brandon amador
  • Will there ever be teleporters?
    Tanner B.
  • Why was basketball invented
    Alex Cates
  • what was the challenger
    Emmett Broderick
  • How did Valentines Day start?
    olivia mcfarland
  • how do you multiply
    colton thompson
  • How smart was Albert Enistein?
    Natalie Brodsky
  • Who invented the first book
    Emarie O'Brien
  • what kind of kids eat stuff like this?
    Imari'aja Robinson
  • What is the difference shampoo and conditioner?
    Natalia Smith
  • can you eat insect
    Aniyah Williams
  • is area 51 real?
    Hunter Harrison
  • What is the history of Valentines day
    Jazymen Yeulia
  • What are the origins of bluegrass
    Kelley Tovar
  • how does the nervous sytem work?
    Lila Hischer
  • How many people are in the world?
    Allie Weber
  • Who is the most popular star wars charater
    james adams
  • What is a Apple made of
    Emma Qubti
  • What caused the explosion of Thera?
    Curiousalicious Psychic
View all questions in the Wonder Bank

Top Nominated Wonder Questions:

  • +1275

    How do you get into a bad habit?

    Aeden DeGraw

  • +1269

    What makes the ocean blue when water is clear?

    Ana Brossette

  • +1190

    Why does at low atomic pressure water boils faster?

    pradyumna behera

  • +1185

    What will school be like in the future?

    Meghan Pohl

  • +1110

    how was water created


  • +1071

    Why is light sometimes colourful

Vote for wonder nominees

Where are You Wondering?

Discover Wonder Hotspots nearby and join!


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


Explore the World of Wonders

Discover the latest Wonders from TECHNOLOGY: dentist, teeth, Health, Human Body, Inventions, Science, and more

Image #13

Who Invented the Candy Bar?

Do you like to go trick-or-treating at Halloween? Of course! Who doesn't…

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…

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…

Image #63

How Does the Internet Work?

Computers on the Internet understand each other because they speak a similar language. This language is called "TCP/IP," which is an abbreviation for Transmission Control Protocol/Internet Protocol…

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