![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
![](https://darksky.org/app/uploads/2017/12/Exploringthenight-siglogo-01-1440x421.png)
Exploring the Night: Winter Fundraising Campaign
Uncategorized
![](https://darksky.org/app/uploads/2023/03/fi-default.png)
What Happens When we Flip the Switch?
Inspiration
![](https://darksky.org/app/uploads/2023/03/fi-default.png)
Nine Reasons to Support IDA’s 2017 Matching Gifts Challenge
Uncategorized
![](https://darksky.org/app/uploads/2017/07/Moth-Week-2-IDA.jpg)
Like moths to a flame: National Moth Week, and how you can help our nighttime wildlife
Wildlife
![](https://darksky.org/app/uploads/2017/07/Barred-Owls_Sm.jpg)
The Mission to Preserve Dark Skies is Critical and Inspiring
Fundraising
When I was 12 years old I spent the summer with my grandparents in rural Kentucky where two huge …
![](https://darksky.org/app/uploads/2017/07/IDA-2017-Matching-Gifts-Challenge-01-scaled-1440x509.jpg)
Message from Co-Founder Tim Hunter
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Help IDA Save Dark Skies I grew up in the 1950’s in Arlington Heights, IL, a northwest suburb of …
![](https://darksky.org/app/uploads/2023/03/fi-default.png)
2017 Matching Gifts Challenge
Uncategorized
![](https://darksky.org/app/uploads/2023/03/fi-default.png)
IDA Honors Exceptional Efforts in Protecting Natural Nighttime Environment
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![](https://darksky.org/app/uploads/2017/02/NorthForkPark-featured-Casey-Grimley700px-460px.png)
World’s First Academic Center Dedicated to Dark Sky Studies
Uncategorized
![](https://darksky.org/app/uploads/2023/03/fi-default.png)
2016 IDA Award Winners
News
![Light pollution in New York City. Photo by Jim Richardson.](https://darksky.org/app/uploads/2016/06/NewYork_20071203_083B.jpg)
Be Part of the Global Debate On LEDs
LEDs
![This photo shows the divide between East and West Berlin that is still visible at night from space. On the left are the gas lamps of the West and on the right, the orange high-pressure sodium lamps of the East, with a stark contrast between them. The image is a powerful reminder that lighting choices made by city planners are long lasting.](https://darksky.org/app/uploads/2016/06/Berlin_ISS_night.jpg)