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Why Do You Change the Oil in Cars?
Today’s Wonder of the Day could get a bit slippery!
Why Do You Change the Oil in Cars?
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Do You Pack Your Lunch?
If you’re coming to Wonderopolis today, you might want to pack a lunch!
Do You Pack Your Lunch?
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Where Is Malaysia Airlines Flight 370?
This Wonder of the Day is just PLANE mysterious!
Where Is Malaysia Airlines Flight 370?