Wonderopolis

Why Is "lb" the Abbreviation For Pound?

Our hearts are POUNDing thinking about today’s Wonder of the Day. We hope you can handle it. It’s a little bit heavy!

#240

Why Is "lb" the Abbreviation For Pound?
Why Does Ice Float in Water?

Today’s cool Wonder of the Day will really float your boat!

#1829

Why Does Ice Float in Water?
Why Do Stars Twinkle?

Today’s Wonder of the Day is up above the world so high, like a diamond in the sky!

#1818

Why Do Stars Twinkle?
Does Hot Air Always Rise?

Today’s super-cool Wonder of the Day will really heat things UP!

#1807

Does Hot Air Always Rise?
Why Does Water Take So Long To Warm Up?

Today’s Wonder of the Day is heating up!

#1805

Why Does Water Take So Long To Warm Up?
Who Is the Fastest Swimmer?

Today’s Wonder of the Day is sure to make waves!

#1790

Who Is the Fastest Swimmer?
What Happened to the Maya?

Be sure to read today’s Wonder of the Day quickly before it vanishes!

#1787

What Happened to the Maya?
How Many Cells Are in the Human Body?

Today’s Wonder of the Day takes a look at the trillions of things that make you who you are!

#1545

How Many Cells Are in the Human Body?
Does Temperature Affect the Bounce of a Ball?

Get ready to turn up the heat in today’s Wonder of the Day!

#1241

Does Temperature Affect the Bounce of a Ball?
What Is a Magma Chamber?

Today’s Wonder of the Day is full of hot stuff!

#1451

What Is a Magma Chamber?
Why Does Helium Change the Sound of Your Voice?

Today’s Wonder of the Day isn’t all hot air!

#1333

Why Does Helium Change the Sound of Your Voice?
Why Are They Called Lava Lamps®?

Today’s volcanic Wonder of the Day just may help you see the light!

#714

Why Are They Called Lava Lamps®?
What Is a Mirage?

Today’s Wonder of the Day only LOOKS real!

#758

What Is a Mirage?
How Fast Can a Feather Fall?

We’re sorry, but today’s Wonder of the Day will probably bring you down!

#1109

How Fast Can a Feather Fall?
Why Is it Easier To Lift Someone in Water than on Land?

Today’s Wonder of the Day will try to answer the age-old question of why you seem so much stronger in the pool!

#1203

Why Is it Easier To Lift Someone in Water than on Land?
Why Is the Sea Salty?

Hold the pepper! Take a deep breath and dive on in. Wonderopolis is heading to the beach today to find out what makes the ocean so salty!

#1198

Why Is the Sea Salty?
Why Is Ice Slippery?

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

#494

Why Is Ice Slippery?
Why Do Bubbles Float?

What gives bubbles their flying clout? Hint: It’s all about gas power!

#57

Why Do Bubbles Float?