Season 3

Video thumbnail: Be Smart The Invisible Creatures That Keep You Alive!

Be Smart

The Invisible Creatures That Keep You Alive!

A complete microbiome lives inside us, and believe it or not, that's a good thing.

The Invisible Creatures That Keep You Alive!

Video thumbnail: Be Smart VENOM: Nature’s Killer Cocktails

Be Smart

VENOM: Nature’s Killer Cocktails

Venom comes in all different types, so here's everything you'll ever need to know.

VENOM: Nature’s Killer Cocktails

Video thumbnail: Be Smart Attack of the Cosmic Space Junk!

Be Smart

Attack of the Cosmic Space Junk!

No astronauts were harmed in the making of this video.

Attack of the Cosmic Space Junk!

Video thumbnail: Be Smart Why Salt & Pepper?

Be Smart

Why Salt & Pepper?

Join the #AnythingButPepper movement!

Why Salt & Pepper?

Video thumbnail: Be Smart Why Don't Other Animals Wear Glasses?

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Why Don't Other Animals Wear Glasses?

Vision impairment is common in humans, so why not the rest of the animal kingdom?

Why Don't Other Animals Wear Glasses?

Video thumbnail: Be Smart Should You Be Worried About Zika?

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Should You Be Worried About Zika?

Mosquitos have been dangerous for, well... forever. So what's new about Zika?

Should You Be Worried About Zika?

Video thumbnail: Be Smart Inside the World of Fire Ants!

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Inside the World of Fire Ants!

A song of ants and fire… and ant-decapitating flies.

Inside the World of Fire Ants!

Video thumbnail: Be Smart Is Your Brain Too Old For Video Games?

Be Smart

Is Your Brain Too Old For Video Games?

Video games are still on the rise. Can you take the heat?

Is Your Brain Too Old For Video Games?

Video thumbnail: Be Smart 6 Chemical Reactions That Changed History

Be Smart

6 Chemical Reactions That Changed History

From fire to food, check out these life-altering reactions that surround us everyday.

6 Chemical Reactions That Changed History

Video thumbnail: Be Smart The Cosmic Afterglow

Be Smart

The Cosmic Afterglow

The lingerling radiation from the ancient universe still surrounds us to this day.

The Cosmic Afterglow

Video thumbnail: Be Smart Why Are You Multicellular?

Be Smart

Why Are You Multicellular?

Even cells can be selfish.

Why Are You Multicellular?

Video thumbnail: Be Smart Are You Smarter Than A Slime Mold?

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Are You Smarter Than A Slime Mold?

The simplest organisms can still accomplish wonders.

Are You Smarter Than A Slime Mold?

Video thumbnail: Be Smart Is Inheritance Really All In Our Genes?

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Is Inheritance Really All In Our Genes?

Epigenetic inheritance is really weird, but is it real?

Is Inheritance Really All In Our Genes?

Video thumbnail: Be Smart How Do Bees Make Honey?

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How Do Bees Make Honey?

One of nature's most amazing recipes.

How Do Bees Make Honey?

Video thumbnail: Be Smart How Many Trees Are There?

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How Many Trees Are There?

It may be an impossible questions, but we can at least get close.

How Many Trees Are There?

Video thumbnail: Be Smart The Equinox Isn't What You Think It Is

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The Equinox Isn't What You Think It Is

Is the equinox really when day = night, or is that a myth?

The Equinox Isn't What You Think It Is

Video thumbnail: Be Smart Einstein Was Right: Gravitational Waves Edition

Be Smart

Einstein Was Right: Gravitational Waves Edition

A theory of physics 100 years in the making.

Einstein Was Right: Gravitational Waves Edition

Video thumbnail: Be Smart How Do Squirrels Find Their Nuts?

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How Do Squirrels Find Their Nuts?

Astounding feats of animal memory.

How Do Squirrels Find Their Nuts?

Video thumbnail: Be Smart 100,000,000 Years From Now

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100,000,000 Years From Now

What relics will the 'anthropocene' age leave behind?

100,000,000 Years From Now

Video thumbnail: Be Smart Why Seasons Make No Sense

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Why Seasons Make No Sense

Day by day, country by country, we tend to measure seasons differently.

Why Seasons Make No Sense

Video thumbnail: Be Smart This Is Not a Rainbow

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This Is Not a Rainbow

The furthest extremes of light refraction phenomena.

This Is Not a Rainbow

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