Wonderopolis

What Is a Spit Valve?

We don’t mean to toot our own horn, but we think today’s Wonder of the Day will be music to your ears.

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What Is a Spit Valve?
Why Does Gum Lose Its Flavor?

We hope you won’t think today’s Wonder of the Day is completely tasteless!

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Why Does Gum Lose Its Flavor?
Why Do I Have Bad Breath in the Morning?

Today’s Wonder of the Day really stinks…but it’s nothing a toothbrush won’t fix!

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Why Do I Have Bad Breath in the Morning?
Do Cows Really Have Four Stomachs?

If you’re coming to Wonderopolis today, you’d better bring your appetite!

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Do Cows Really Have Four Stomachs?
How Do Fangs Work?

Today’s Wonder of the Day is one you’ll really want to sink your teeth into!

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How Do Fangs Work?
Why Is Bubble Gum Sticky?

Today’s Wonder of the Day will really stick with you!

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Why Is Bubble Gum Sticky?
How Do You Digest Food?

Today’s Wonder of the Day might have you feeling a bit rumbly in your tummy!

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How Do You Digest Food?
How Do Wasps Build Their Nests?

Join us in Wonderopolis for a closer look at a nest you don’t want to mess with!

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How Do Wasps Build Their Nests?
Why Do Dogs Drool?

Today’s Wonder of the Day is bad to the bone!

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Why Do Dogs Drool?
How Long Is a Giraffe’s Tongue?

The subject of today’s Wonder of the Day is in trouble if it gets a sore throat!

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How Long Is a Giraffe’s Tongue?
Why Do Mosquito Bites Itch?

Today’s Wonder of the Day may have you swatting and scratching!

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Why Do Mosquito Bites Itch?
How Does Invisible Ink Work?

Now you don’t see it…now you do! Calling all super spies and secret agents! Today, we’re learning about invisible ink.

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How Does Invisible Ink Work?
What Is the Smallest Living Mammal?

You might have to look really hard to see today’s Wonder of the Day!

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What Is the Smallest Living Mammal?
Why Are Pavlov’s Dogs Famous?

We sure hope today’s Wonder of the Day rings a bell!

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Why Are Pavlov’s Dogs Famous?