Season 7

Video thumbnail: It's Okay to Be Smart Why We Should Put Rockets On the Moon

It's Okay to Be Smart

Why We Should Put Rockets On the Moon

I went to NASA in Houston to talk to astronaut Don Pettit.

Why We Should Put Rockets On the Moon

Video thumbnail: It's Okay to Be Smart Evolution FAILS in the Human Body

It's Okay to Be Smart

Evolution FAILS in the Human Body

Here’s a rundown of a few of the human body’s biggest evolutionary fails!

Evolution FAILS in the Human Body

Video thumbnail: It's Okay to Be Smart What Would Trees Look Like On Other Planets?

It's Okay to Be Smart

What Would Trees Look Like On Other Planets?

Why are trees and other plants green? The answer is full of surprises.

What Would Trees Look Like On Other Planets?

Video thumbnail: It's Okay to Be Smart 7 Scientific Urban Legends Debunked!

It's Okay to Be Smart

7 Scientific Urban Legends Debunked!

I look at a few of the most famous incorrect factoids in science.

7 Scientific Urban Legends Debunked!

Video thumbnail: It's Okay to Be Smart How Blind People See With Sound

It's Okay to Be Smart

How Blind People See With Sound

Blind YouTuber Molly Burke shows Joe Hanson a new way to see.

How Blind People See With Sound

Video thumbnail: It's Okay to Be Smart Do Trees Talk?

It's Okay to Be Smart

Do Trees Talk?

Walk into any forest, and beneath your feet is what helps make life on Earth possible.

Do Trees Talk?

Video thumbnail: It's Okay to Be Smart Why We Are Losing the Night Sky

It's Okay to Be Smart

Why We Are Losing the Night Sky

It never gets dark anymore. Not REALLY dark, anyway.

Why We Are Losing the Night Sky

Support for PBS.org provided by: