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Who Invented Escalators?
We think today’s Wonder of the Day will really move you!
Who Invented Escalators?
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Are Ghosts Real?
We hope you say “Boo!” to today’s Wonder of the Day!
Are Ghosts Real?
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Why Are Batteries Different Sizes?
We hope today’s all-new Wonder of the Day really gives you a charge!
Why Are Batteries Different Sizes?