This isn’t my content, but I wanted to mention an important issue:
Good lighting (not wasted lighting) that provides security for people but:
is amber in color
With such lighting, we can increase safety and savings by eliminating glare.
Here’s more on that topic from PBS It’s Okay to Be Smart, “Why We Are Losing The Night Sky.”
The video below is from McDonald Observatory with the University of Texas at Austin. It’s in the West Texas desert in the town of Fort Davis, near Big Bend National Park.