Season 5

Video thumbnail: Be Smart Do Fish Pee?

Be Smart

Do Fish Pee?

You know you’ve wondered. Do fish actually pee?

Do Fish Pee?

Video thumbnail: Be Smart Does Someone Else Have Your Face?

Be Smart

Does Someone Else Have Your Face?

They say everyone has a doppelgänger, but is that really true?

Does Someone Else Have Your Face?

Video thumbnail: Be Smart The Raisin Bran Effect

Be Smart

The Raisin Bran Effect

Where do you see the Brazil Nut Effect around you?

The Raisin Bran Effect

Video thumbnail: Be Smart Can We Get Older Without Aging?

Be Smart

Can We Get Older Without Aging?

What do other life forms have to teach us about staying alive as we get old?

Can We Get Older Without Aging?

Video thumbnail: Be Smart The Dinosaur On Your Thanksgiving Table

Be Smart

The Dinosaur On Your Thanksgiving Table

Eating turkey this holiday season? You’re eating a dinosaur!

The Dinosaur On Your Thanksgiving Table

Video thumbnail: Be Smart What is Farthest Away?

Be Smart

What is Farthest Away?

The edge of everything might not even exist…

What is Farthest Away?

Video thumbnail: Be Smart The Deadliest Flu Season in History?

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The Deadliest Flu Season in History?

The 1918 Flu outbreak killed 5% of the world's population--could it happen again?

The Deadliest Flu Season in History?

Video thumbnail: Be Smart The Largest River On Earth Is In The Sky

Be Smart

The Largest River On Earth Is In The Sky

Scientists have discovered the largest river on Earth, and it’s in the sky above.

The Largest River On Earth Is In The Sky

Video thumbnail: Be Smart Where Do Teeth Come From?

Be Smart

Where Do Teeth Come From?

Teeth are made from some biological nanotechnology that will blow your mind.

Where Do Teeth Come From?

Video thumbnail: Be Smart What Do Raindrops Really Look Like?

Be Smart

What Do Raindrops Really Look Like?

Raindrops are shaped like teardrops, right? Wrong! Let's discover rain's true shape.

What Do Raindrops Really Look Like?

Video thumbnail: Be Smart Is Height All in Our Genes?

Be Smart

Is Height All in Our Genes?

Turns out the inheritance of height is a lot more complicated than we thought.

Is Height All in Our Genes?

Video thumbnail: Be Smart Will You Still Eat Raw Fish After Watching This Video?

Be Smart

Will You Still Eat Raw Fish After Watching This Video?

Ever wondered why restaurants warn you about raw or undercooked seafood on their menus?

Will You Still Eat Raw Fish After Watching This Video?

Video thumbnail: Be Smart How Habits are Formed

Be Smart

How Habits are Formed

Got a bad habit you can’t break? That’s because it’s literally wired into your brain.

How Habits are Formed

Video thumbnail: Be Smart How Some Words Get Forgetted

Be Smart

How Some Words Get Forgetted

English is confusing. Its irregular verbs can teach us a lot about how languages evolve.

How Some Words Get Forgetted

Video thumbnail: Be Smart Why Do Disney Princesses All Look Like Babies?

Be Smart

Why Do Disney Princesses All Look Like Babies?

Why do we find things cute? Let's take a scientific look.

Why Do Disney Princesses All Look Like Babies?

Video thumbnail: Be Smart 3 Incredible Examples of Evolution Hidden In Your Body

Be Smart

3 Incredible Examples of Evolution Hidden In Your Body

Here are some stories of how evolution and natural selection made you the way you are.

3 Incredible Examples of Evolution Hidden In Your Body

Video thumbnail: Be Smart The Only Animal That Weeps

Be Smart

The Only Animal That Weeps

Why do we cry? Here’s the science of human tears!

The Only Animal That Weeps

Video thumbnail: Be Smart The Surprising Reason We Eat Spicy Food

Be Smart

The Surprising Reason We Eat Spicy Food

Spices and other plant ingredients have powers that make them truly magical superfoods!

The Surprising Reason We Eat Spicy Food

Video thumbnail: Be Smart It's Okay to Fart

Be Smart

It's Okay to Fart

Farting is natural and here's how it works.

It's Okay to Fart

Video thumbnail: Be Smart Which Life Form REALLY Dominates Earth?

Be Smart

Which Life Form REALLY Dominates Earth?

This week we break down the concept of “biomass” to judge Earth’s living things.

Which Life Form REALLY Dominates Earth?

Video thumbnail: Be Smart What’s The Hottest Hot and Coldest Cold?

Be Smart

What’s The Hottest Hot and Coldest Cold?

Weird things happen at extreme hot and absolute cold.

What’s The Hottest Hot and Coldest Cold?

Video thumbnail: Be Smart How Evolution Turned A Possum Into A Wolf

Be Smart

How Evolution Turned A Possum Into A Wolf

Here’s the science of convergent evolution!

How Evolution Turned A Possum Into A Wolf

Video thumbnail: Be Smart The Cosmic Origins of Earth's Water

Be Smart

The Cosmic Origins of Earth's Water

The origin of water traces beyond the solar system to the earliest days of the universe.

The Cosmic Origins of Earth's Water

Video thumbnail: Be Smart The Deadpool Salamander That Can Regrow Limbs

Be Smart

The Deadpool Salamander That Can Regrow Limbs

Axolotls are special salamanders. They can regenerate entire limbs!

The Deadpool Salamander That Can Regrow Limbs

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