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Explore Wonders | Find: 尼波星大学学历认证办理{官网:ｂｚｗ９８５.ｃｏｍ}-哪里买尼波星大学学历认证办理【咨询网:ｂｚｗ９８５.ｃｏｍ】-安国尼波星大学学历认证办理哪里做-哪里办尼波星大学学历认证办理ae | Wonderopolis

Wonderopolis

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Why Doesn't Glue Stick To the Inside Of the Bottle?

If you ever find yourself in a sticky situation, today’s Wonder of the Day could be very helpful. Join us as we let the genie — ummm, glue — out of the bottle!

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Why Doesn't Glue Stick To the Inside Of the Bottle?
Who Invented Sticky Notes?

We can’t remember what today’s Wonder of the Day is about. We should’ve written ourselves a note!

#473

Who Invented Sticky Notes?
Do Robots Wonder?

Today’s Wonder of the Day takes a closer look at machines that sometimes act like people!

#629

Do Robots Wonder?
Why Do Sidewalks Have Lines?

Today’s Wonder of the Day will be a walk in the park if you stay between the lines!

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Why Do Sidewalks Have Lines?
Why Is Ice Slippery?

Skate on over to Wonderopolis today for a Wonder that’s really slick!

#494

Why Is Ice Slippery?
What Is a Pothole?

We hope today’s Wonder of the Day isn’t an obstacle in your path to learning!

#1147

What Is a Pothole?