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Is It Bad Luck to Open an Umbrella Indoors?
Down on your luck? Watch out for ladders, black cats, broken mirrors, and more today in Wonderopolis!
Is It Bad Luck to Open an Umbrella Indoors?
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What Causes a Rip Current?
Watch out! Today’s Wonder of the Day might pull you under!
What Causes a Rip Current?
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How Is Glass Recycled?
Today’s Wonder of the Day can be used over and over again!
How Is Glass Recycled?