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Why do Trees Talk to Each Other?

Why do Trees Talk to Each Other?

Season 7 Episode 17
5:27
How Blind People See With Sound

How Blind People See With Sound

Season 7 Episode 18
16:07
Why Don't Birds Lay Square Eggs?

Why Don't Birds Lay Square Eggs?

Season 7 Episode 19
7:21
7 Scientific Urban Legends Debunked!

7 Scientific Urban Legends Debunked!

Season 7 Episode 20
11:24
What Color Is A Banana?

What Color Is A Banana?

Season 7 Episode 23
8:46
This Face Changes the Human Story

This Face Changes the Human Story

Season 7 Episode 25
13:11
Evolution Fails in the Human Body

Evolution Fails in the Human Body

Season 7 Episode 26
11:53
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It's Okay to Be Smart

Why We Are Losing the Night Sky

Season 7 Episode 16

It never gets dark anymore. Not REALLY dark, anyway. Not like it used to. Light pollution is not only making it more difficult to see the night sky, but it's also affecting our health. For the past century and a half, since the dawn of electric light, we’ve been losing our connection to the night. We need artificial light for modern society, of course.