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  • How many bridges cross the Amazon River?
  • Why aren't there any bridges across the Amazon?
  • What engineering challenges exist to building a bridge over the Amazon?
Find it out

Environmentalists don’t want to see bridges over the Amazon for fear that they will lead to development and what else?

Test your knowledge
  • What kind of borders do countries have? 
  • Why do countries have borders?
  • What is happening at the U.S.-Mexico border?
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This Wonder was mainly about . . .

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  • How were the stone spheres of Costa Rica made?
  • How big are the stone spheres of Costa Rica?
  • How old are the stone spheres of Costa Rica?
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The stone spheres of Costa Rica were found by modern people during which decade?

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  • Who was Selena Quintanilla?
  • What awards did Selena win?
  • What happened to Selena?
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Which actress played Selena in the 1997 movie?

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  • What can satellites do?
  • How many satellites orbit the Earth?
  • When was the first satellite launched into orbit?
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Which force ultimately pulls all objects back to Earth?

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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

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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...

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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...

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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...

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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!

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