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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 Smart152

Video thumbnail: It’s Okay to Be Smart Why Salt & Pepper?

It’s Okay to Be Smart

Why Salt & Pepper?

Join the #AnythingButPepper movement!

5:23

Why Salt & Pepper?

5:23

Video thumbnail: It’s Okay to Be Smart Why Don't Other Animals Wear Glasses?

It’s Okay to Be Smart

Why Don't Other Animals Wear Glasses?

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

5:03

Why Don't Other Animals Wear Glasses?

5:03

Video thumbnail: It’s Okay to Be Smart Should You Be Worried About Zika?

It’s Okay to Be Smart

Should You Be Worried About Zika?

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

5:45

Should You Be Worried About Zika?

5:45

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