• What is Fermat’s Last Theorem?
  • Who was Pierre de Fermat?
  • What is a mathematical proof?
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A mathematical proof is . . .

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  • Do hummingbirds really hum?
  • How fast do hummingbirds flap their wings?
  • Where do most hummingbirds live?
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Hummingbirds can fly up to how many miles per hour?

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  • How many people are on Earth?
  • What are the most populous countries in the world?
  • What will Earth's population be in 2100?
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The world population moved from six billion to seven billion in a period of about how many years?

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  • What is a sari?
  • How long have people worn saris?
  • How many ways can you wrap a sari?
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This Wonder is mainly about . . .

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  • Why do leaves change color in autumn?
  • Why do trees have leaves?
  • What effect does the weather have on leaf colors?
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Chlorophyll makes leaves appear what color?

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

Latest from the Wonder Bank

  • What is piragua?
    Published as Wonder of the Day #2812
  • how one dollar bill were made
  • why is music such a popular topic
  • why does when reading in dim light hurt your eyes
  • Who created the fire alarm
  • what are the best strategys in hockey
  • why do bubbles pop?
  • what basically is Greek mythology
  • i wonder why cats dont like dogs for a while until they have been with them for a long time
  • Why do people have nightmares?
  • How do tornaoes form
  • When is the bed made
  • Why does lightning happen?
  • How and when were the first volcanoes created
  • why is there no cure to canser
  • why do you hold hands
  • Why do you fall in love
  • How do computers work?
  • What do blind people see?
  • is dance a real sport
  • Why do people have crushes?
  • What Happended To DB Cooper?
  • how do hurcainnes get there name?
  • Why am I a god at Roblox?
  • Why do people have crushes?
  • how are glasses lens made?
  • Why/ how do people come of with random names for things like a pencil?
  • Why do we need air to breath
  • how do you get to heven
  • how is viruses created
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?


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Explore the World of Wonders

Discover the latest Wonders from MATH: Math, Numbers, Unsolved Math Problems, Number Theory, Pierre De Fermat, Sir Andrew Wiles, and more

Wonderopolis #9

How Can Math Help You Cook?

Renowned American chef Julia Child once said, “I’m very happy . . . if I can influence anyone to keep in the kitchen and make it a real family room and part of your life.” Does that statement ring tru...

Wonderopolis #162

What Is Pi?

Before we can learn more about pi, it will help if we review a bit of geometry. In particular, we need to brush up on circles. Why? Well, we’ll get around (pun intended!) to that in a second . . .

Wonderopolis #190

What Is a Prime Number?

Have you ever eaten prime rib? Maybe you've lucked into a prime parking spot near the front of the store? Have you ever primed a pump? What about priming the walls before painting them?

Wonderopolis #224

What Is Infinity?

Do you know of anything that goes on and on? The school day may seem to last forever, but it does have an end! Mathematicians have a special word for things that go on forever. It’s called “infinity.“

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