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How Do Bulletproof Vests Work?
Today’s Wonder of the Day can stop a speeding bullet!
How Do Bulletproof Vests Work?
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How Do Helicopters Work?
Today’s Wonder of the Day will take you up, up and away!
How Do Helicopters Work?
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What’s the Difference Between Canoes and Kayaks?
You won’t want to be in today’s Wonder of the Day without a paddle!
What’s the Difference Between Canoes and Kayaks?
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When Were Ice Skates Invented?
Lace up your skates and glide over to Wonderopolis today. It’s time for a history lesson on ice!
When Were Ice Skates Invented?