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  What Was the Green Book?

  We hope you’re ready to hit the road with today’s Wonder of the Day!

  #2583

  What Was the Green Book?

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  How Do Hyperloops Work?

  Stay in the loop with today’s Wonder of the Day!

  #2344

  How Do Hyperloops Work?

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  What is the Taj Mahal?

  You can't TAJ this Wonder!

  #2304

  What is the Taj Mahal?

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  Where is Coober Pedy?

  Today’s Wonder of the Day is such a well-kept secret, you might even say it’s “underground”!

  #2303

  Where is Coober Pedy?

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  Can Blind People See the World?

  There’s more than meets the eye in today’s Wonder of the Day!

  #2235

  Can Blind People See the World?

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  What Was the Orient Express?

  Today’s exotic Wonder of the Day will help keep you on track!

  #2116

  What Was the Orient Express?

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  What Is a Wormhole?

  Today’s Wonder of the Day takes a look at a concept that may be more science fiction than science!

  #2108

  What Is a Wormhole?

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  Where Is the Gobi Desert?

  Today’s Wonder of the Day is quite dry, but we think you’ll find it fascinating anyway!

  #1983

  Where Is the Gobi Desert?

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  Why Does the Wind Whistle?

  Wherever the wind may blow you, we hope you wind up in Wonderopolis today!

  #1795

  Why Does the Wind Whistle?

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  How Does a Train Work?

  All aboard! You’ll want to make tracks to Wonderopolis today before an all-new Wonder of the Day leaves the station.

  #1765

  How Does a Train Work?

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  Why Can’t You Drive as Fast as You Want?

  Today’s Wonder of the Day really puts the pedal to the metal!

  #1664

  Why Can’t You Drive as Fast as You Want?

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  Who Was the First Emperor of China?

  Join us in Wonderopolis today for a trip to the Far East!

  #1662

  Who Was the First Emperor of China?

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  How Many Cars Are on the Road at One Time?

  Today’s Wonder of the Day really has us stuck in a jam!

  #1608

  How Many Cars Are on the Road at One Time?

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  How Do Police Know How Fast You’re Going?

  Zoom! You won’t believe how quickly today’s Wonder of the Day will fly by!

  #1558

  How Do Police Know How Fast You’re Going?

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  Where Are the Suburbs?

  You’ll find today’s Wonder of the Day just outside the big city!

  #1547

  Where Are the Suburbs?

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  How Fast Can a Bullet Travel?

  Don’t blink or you’ll surely miss today’s Wonder of the Day!

  #1541

  How Fast Can a Bullet Travel?

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  Why Do Snails Leave Slime Trails?

  Today’s Wonder of the Day is really slow and very slimy!

  #1536

  Why Do Snails Leave Slime Trails?

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  Can the World Be a Classroom?

  Today’s Wonder of the Day is the first step of a fantastic journey!

  #1515

  Can the World Be a Classroom?

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  Can You Walk from Mexico to Canada?

  If you’re coming to Wonderopolis today, you’d better bring your hiking boots!

  #1491

  Can You Walk from Mexico to Canada?

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  Have You Ever Been Whitewater Rafting?

  Today’s Wonder of the Day is a thrilling rush that only nature can provide!

  #1488

  Have You Ever Been Whitewater Rafting?

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