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It’s Okay to Be Smart

Why is the sky any color?

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 Smart58

Video thumbnail: It’s Okay to Be Smart There Was No First Human

It’s Okay to Be Smart

There Was No First Human

No, YOUR grandfather was a fish

3:44

There Was No First Human

3:44

Video thumbnail: It’s Okay to Be Smart Science of Marathon Running

It’s Okay to Be Smart

Science of Marathon Running

26.2 miles of awesome human evolution.

7:17

Science of Marathon Running

7:17

Video thumbnail: It’s Okay to Be Smart How The Elements Got Their Names

It’s Okay to Be Smart

How The Elements Got Their Names

There's a story inside every box

3:31

How The Elements Got Their Names

3:31

Video thumbnail: It’s Okay to Be Smart What Are The Most Important Science Images Ever?

It’s Okay to Be Smart

What Are The Most Important Science Images Ever?

One picture can change the world

6:23

What Are The Most Important Science Images Ever?

6:23

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