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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 Smart87

Video thumbnail: It’s Okay to Be Smart How Many Heartbeats Do We Get?

It’s Okay to Be Smart

How Many Heartbeats Do We Get?

Science really gets my heart going…

4:27

How Many Heartbeats Do We Get?

4:27

Video thumbnail: It’s Okay to Be Smart 5 Weird Involuntary Behaviors Explained!

It’s Okay to Be Smart

5 Weird Involuntary Behaviors Explained!

Yawns, hiccups, twitchy eyes (and more) explained!

4:50

5 Weird Involuntary Behaviors Explained!

4:50

Video thumbnail: It’s Okay to Be Smart Why People Don't Believe In Climate Science

It’s Okay to Be Smart

Why People Don't Believe In Climate Science

Scientists overwhelmingly agree that our climate is changing.

6:50

Why People Don't Believe In Climate Science

6:50

Video thumbnail: It’s Okay to Be Smart Building Curiosity

It’s Okay to Be Smart

Building Curiosity

An ode to curiosity… with LEGO

2:06

Building Curiosity

2:06

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