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Search Results for blue light pollution
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How a small town in the U.S. came to endorse the Five Principles for Responsible Outdoor Lighting
News
Like most of you, I’ve struggled for years to find a way to get my city — the small …
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Assess your home’s outdoor lighting
Get involved
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Causes of light pollution
Resources
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Advancing responsible outdoor lighting
What we do
![Apartment building with several balconies lit up at night, with no people on them.](https://darksky.org/app/uploads/2023/04/hero-apartment-renter.jpg)
What renters can do about light pollution
Resources
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What is light pollution?
Resources
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New study highlights the need for urgent action to reverse runaway light pollution
Light Pollution
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Light Monitor Grant Program
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Highlights from Under One Sky 2021
News
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Values-centered outdoor lighting
Resources
![Under One Sky 2020 Highlights](https://darksky.org/app/uploads/2020/10/Under-One-Sky-Header-V4-scaled-1440x809.jpg)
Highlights from Under One Sky 2020
News
![Celebrate Energy Efficiency Day by reducing light pollution.](https://darksky.org/app/uploads/2020/09/Celebrate-EE-Day-1440x1440.jpg)