![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)
111 results for
Search Results for blue light pollution
![World map of artificial sky brightness. Image from the new "World Atlas of Artificial Night Sky Brightness."](https://darksky.org/app/uploads/2016/06/Whole_world.png)
80% of World Population Lives Under Skyglow, New Study Finds
Light Pollution
![](https://darksky.org/app/uploads/2015/12/led-light-houston-700px-366px.png)
Lessons from the retrofit revolution
Light Pollution
![A satellite image of Berlin at night showing the difference between the lights of west and east Berlin.](https://darksky.org/app/uploads/2015/12/Berlin_ISS_night.jpg)
Night Sky Data to the People!
Light Pollution
![Flocks of birds flying over water while the sun is setting causing vibrant orange clouds](https://darksky.org/app/uploads/2015/11/Birds.jpeg)
2015 AGM Conference Abstracts Are Available
Uncategorized
![](https://darksky.org/app/uploads/2015/09/iStock_000020751712_Double.jpg)
Help measure how the night sky is changing
Light Pollution
![One Coin two Sides-Impacts of Light Pollution to Fish and Wildlife Resources and the Mitigating Role of Emerging Lighting Technologies](https://darksky.org/app/uploads/2015/07/AGM-2015.jpg)
The IDA 2015 Annual General Meeting
Uncategorized
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Software and mobile apps
Resources
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Useful links
Resources
Some of the tools and sites we use from our partners, friends, and colleagues.
![Illustration of a world map with icons of peoples heads scattered over the globe.](https://darksky.org/app/uploads/2023/02/fi-find-local-chapter-1.jpg)
Find your local chapter
Who we are
![A shielded LED outdoor streetlight against a setting sky.](https://darksky.org/app/uploads/2015/05/led.jpg)
IDA Responds to 2014 Nobel Prize for Physics
Light Pollution
![Young Man in Desert Landscape Looking up at Starry Sky and Milky Way](https://darksky.org/app/uploads/2014/09/ESO_Tafreshi2.jpg)
Success stories
History
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