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It’s Okay to Be Smart

Why is the sky any color?

Video duration: 2:43

Why is the sky blue? It's a question that you'd think kids have been asking for thousands of years, but it might not be that old at all. The ancient Greek poet Homer never used a word for blue in The Odyssey or The Iliad, because blue is one of the last colors that cultures pick out a word for.

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Life by the Numbers

Life by the Numbers

How successful are we compared to other species? It turns out that biomass, or what things weigh, can be mo...

The Auroras

The Auroras

Space might seem like an empty place, but the area surrounding Earth is constantly being bombarded by waves...

Episodes of It’s Okay to Be Smart81

Video thumbnail: It’s Okay to Be Smart Why I'm Scared of Spiders

It’s Okay to Be Smart

Why I'm Scared of Spiders

The science of… OH GOD IS THAT A SPIDER?!

3:06

Why I'm Scared of Spiders

3:06

Video thumbnail: It’s Okay to Be Smart Why Does The Earth Have Layers?

It’s Okay to Be Smart

Why Does The Earth Have Layers?

…or why we live on an onion made of magma

4:31

Why Does The Earth Have Layers?

4:31

Video thumbnail: It’s Okay to Be Smart Why Do Clouds Stay Up?

It’s Okay to Be Smart

Why Do Clouds Stay Up?

There's nothing wrong with having your head in the clouds

5:13

Why Do Clouds Stay Up?

5:13

Video thumbnail: It’s Okay to Be Smart A Slice of Pizza Science!

It’s Okay to Be Smart

A Slice of Pizza Science!

How does math keep a folded slice from drooping?

3:32

A Slice of Pizza Science!

3:32

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