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Why Is "lb" the Abbreviation For Pound?
Our hearts are POUNDing thinking about today’s Wonder of the Day. We hope you can handle it. It’s a little bit heavy!
Why Is "lb" the Abbreviation For Pound?
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Do Insects Work Out?
Grab a bug and head on over to Wonderopolis today to pump some iron!
Do Insects Work Out?
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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.
What Is a Spit Valve?
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Who Is Uncle Sam?
Today’s Wonder of the Day features everyone’s favorite uncle!
Who Is Uncle Sam?
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How Do Mood Rings Work?
We hope you’re in the mood for an interesting Wonder of the Day today!
How Do Mood Rings Work?