![Works change a street light in the dark sky community of Prestegne, Wales.](https://darksky.org/app/uploads/2024/01/8-Lighting-Tests-1440x700.jpg)
55 news and pages in Category
Resources
![](https://darksky.org/app/uploads/2020/05/2019-08-27_09-14-08-01-1440x961.jpeg)
Light pollution reduces our night sky heritage
Effects of light pollution
![A man at night, nearly hidden in the glare of a park light.](https://darksky.org/app/uploads/2023/04/The-Ambush-topaz-scaled-1440x810.jpeg)
Outdoor lighting at night doesn’t do what you think it does to reduce crime and increase safety
Effects of light pollution
![](https://darksky.org/app/uploads/2023/04/London-from-the-air-at-night-shutterstock_1343432525-scaled-1440x958.jpg)
Light pollution wastes energy and money and damages the climate
Effects of light pollution
![Sea Turtle Conservation](https://darksky.org/app/uploads/2014/09/seaturtleconservation.jpg)
Sea turtle conservation
Resources
![Materials for Educators](https://darksky.org/app/uploads/2014/09/educators.jpg)
Materials for educators
Resources
![A mountain lion at night, with the city lights of Los Angeles in the background.](https://darksky.org/app/uploads/2023/04/hero-Wildlife-ecosystems.jpg)
Light pollution harms wildlife and ecosystems
Resources
![](https://darksky.org/app/uploads/2023/03/fi-default.png)