Explore Wonders | Find: 日本独协大学毕业证电子图【咨询网:ｚｊｗ２１１.ｃｏｍ】乐平日本西日本工业大学文凭毕业证哪里能买到-商品房{官网:ｚｊｗ２１１.ｃｏｍ}日本首都大学东京毕业证电子图c2 | Wonderopolis

Explore Wonders | Find: 日本独协大学毕业证电子图【咨询网:ｚｊｗ２１１.ｃｏｍ】乐平日本西日本工业大学文凭毕业证哪里能买到-商品房{官网:ｚｊｗ２１１.ｃｏｍ}日本首都大学东京毕业证电子图c2 | Wonderopolis

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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?
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!

#315

Why Doesn't Glue Stick To the Inside Of the Bottle?
Why Are They Called "Ears" of Corn?

Today's Wonder of the Day has ears, but it can't hear a thing!

#37

Why Are They Called "Ears" of Corn?
Why Do Sidewalks Have Lines?

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

#403

Why Do Sidewalks Have Lines?
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 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?