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It’s Okay to Be Smart

S1 Ep4: 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 Smart157

Video thumbnail: It’s Okay to Be Smart S4 Ep3: What’s REALLY Warming the Earth?

It’s Okay to Be Smart

S4 Ep3: What’s REALLY Warming the Earth?

As earth temperatures continue to rise, what's really to blame?

5:30

S4 Ep3: What’s REALLY Warming the Earth?

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Video thumbnail: It’s Okay to Be Smart S3 Ep50: The Invisible Creatures That Keep You Alive!

It’s Okay to Be Smart

S3 Ep50: The Invisible Creatures That Keep You Alive!

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

5:23

S3 Ep50: The Invisible Creatures That Keep You Alive!

5:23

Video thumbnail: It’s Okay to Be Smart S3 Ep49: VENOM: Nature’s Killer Cocktails

It’s Okay to Be Smart

S3 Ep49: VENOM: Nature’s Killer Cocktails

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

5:08

S3 Ep49: VENOM: Nature’s Killer Cocktails

5:08

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