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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 Smart134

Video thumbnail: It’s Okay to Be Smart 100,000,000 Years From Now

It’s Okay to Be Smart

100,000,000 Years From Now

What relics will the 'anthropocene' age leave behind?

5:28

100,000,000 Years From Now

5:28

Video thumbnail: It’s Okay to Be Smart Why Seasons Make No Sense

It’s Okay to Be Smart

Why Seasons Make No Sense

Day by day, country by country, we tend to measure seasons differently.

3:01

Why Seasons Make No Sense

3:01

Video thumbnail: It’s Okay to Be Smart This Is Not a Rainbow

It’s Okay to Be Smart

This Is Not a Rainbow

The furthest extremes of light refraction phenomena.

3:17

This Is Not a Rainbow

3:17

Video thumbnail: It’s Okay to Be Smart Who Shares Your Birthday?

It’s Okay to Be Smart

Who Shares Your Birthday?

Birthday math has never been more fun.

5:16

Who Shares Your Birthday?

5:16

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