Explore Wonders | Find: blood... | Wonderopolis

Explore Wonders | Find: blood... | Wonderopolis

Wonderopolis

If Blood Is Red, Why Are Veins Blue?

Can the air you breathe make things change colors? Find out today in Wonderopolis!

#519

If Blood Is Red, Why Are Veins Blue?
How Much Blood Is In Your Body?

Today’s Wonder of the Day is a matter of life and death — but it’s not for the faint of heart!

#135

How Much Blood Is In Your Body?
How Does Blood Travel Through Your Body?

Today’s Wonder of the Day will take you on a trip through your veins and arteries!

#999

How Does Blood Travel Through Your Body?
Why Is Blood Pressure Important?

We don’t want to pressure you, but we hope you’ll join us in Wonderopolis today!

#1870

Why Is Blood Pressure Important?
What Is a Blood Clot?

We’re all WOUND up for today’s Wonder of the Day!

#2616

What Is a Blood Clot?
What Type of Blood Do You Have?

Today’s Wonder of the Day is brought to you by the letters A, B, and O!

#1507

What Type of Blood Do You Have?
Can a Tick Make You Sick?

Today’s Wonder of the Day may have you WONDERing what makes it tick!

#906

Can a Tick Make You Sick?
How Many Breaths Do You Take Each Day?

Without today’s Wonder of the Day, we’d all be quite blue!

#1297

How Many Breaths Do You Take Each Day?
Why Do Elephants Have Big Ears?

Check out today’s Wonder of the Day to learn more about a special animal who has a built-in air conditioning system on the sides of its head!

#1199

Why Do Elephants Have Big Ears?
Why Do Mosquito Bites Itch?

Today’s Wonder of the Day may have you swatting and scratching!

#942

Why Do Mosquito Bites Itch?
Why Do We Need To Breathe?

Today’s Wonder of the Day is a real breath of fresh air!

#1348

Why Do We Need To Breathe?
Why Do We Bruise?

Today’s Wonder of the Day is black and blue and read all over!

#1388

Why Do We Bruise?
Can Frogs Freeze?

Today’s Wonder of the Day is so cool it’ll have you jumping for joy!

#1455

Can Frogs Freeze?
How Do Fireflies Glow?

Who left the lights on? Mother Nature did. Meet a little bug with big glowing power. No light bulbs required. Today’s Wonder of the Day is about fireflies!

#1201

How Do Fireflies Glow?
Why Do You Blush?

My, what pink cheeks you have! Find out what has Wonderopolis blushing in today’s Wonder of the Day.

#1182

Why Do You Blush?
Will Your Tongue Really Stick to a Frozen Flagpole?

Today’s chilly Wonder of the Day will have you learning more about the science of winter!

#802

Will Your Tongue Really Stick to a Frozen Flagpole?
Why Do We Get Fevers?

Today’s Wonder of the Day really turns up the heat!

#1354

Why Do We Get Fevers?
What Is Diabetes?

Today’s Wonder of the Day takes a look at the not-so-sweet truth about a condition that affects millions of people.

#860

What Is Diabetes?
How Do Horned Lizards Shoot Blood from Their Eyes?

Today’s Wonder of the Day features an animal you might not want to look in the eyes!

#2044

How Do Horned Lizards Shoot Blood from Their Eyes?
Are You Cool?

We believe you’ll think today’s Wonder of the Day is the hippest of them all!

#1037

Are You Cool?

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