Up Next

This phenomenon only happens in Hawaii . . . and Cuba & Nigeria & Indonesia & Peru & Sudan & Laos &…
Season 2
Episode 26
3:28
Back to Show
Physics Girl
Why aren't plants black?
Season 2
Episode 15
Why are plants green? Is there a reason plants evolved to be green, globally? What does it have to do with the color of the sunlight coming down through our atmosphere?
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By

8:32
Hawaii is known for its volcanoes, but most volcanoes on earth exist along tectonic plate

11:21
The TRAPPIST-1 exoplanet system has seven earth-like planets.

8:03
How can you time 45 minutes with 2 sticks that each burn for one hour?

6:31
Answers to riddles.

4:08
Check out these physics riddles.

7:41
Create "lightning" in your living room!

7:34
My dad has been hit by lightning twice!

10:18
How fast is the internet? How fast can we send data?

9:09
How can you use an infrared camera to see through walls? To inspect the scene of a crime?

6:33
What happens when you keep building a skyscraper higher and higher?

5:42
The most exciting SciFi movies have tons of space explosions.

7:19
Math can be fun when you play with the rules.