Light caused by people is called artificial light. Artificial light that is not needed is called light pollution. Light pollution makes it hard to see the stars.
Photo Credit: Everlock/Getty Images
In the Know
Just Found: An ‘Extinct’ Clam That is Alive
The clams were found in California. They were found on … read more
In the Know
Raindrops Keep Falling On My Head!
Heavy rain can make the puddles too big. The extra … read more
In the Know
Ruby Bridges Goes to School
Ruby Bridges was six years old. She had a hard … read more