(Header image – “Starlight Highway” by Tom Rae)
Light pollution is a problem we can solve!
Start learning
- Learn the Basics: start with our handout and five factsheets from Dark Sky International
- Read the Research: Artificial Light at Night: State of the Science (2025).
- Learn the Five Principles for Responsible Outdoor Lighting
- WHY – light should have a clear purpose
- WHERE – directed only to where it is needed
- WHEN – only when it is useful
- HOW MUCH – no brighter than necessary
- WHAT COLOR – warm light wherever possible
- Read a Book: The End of Night or Night Magic
- Watch a Film: The City Dark – view the trailer or rent the video

Become active
- Improve Your Home Lighting
- Read a colorful program guide (2025)
- See our handout with specific suggestions
- Browse dark-sky-friendly light fixtures at Lowe’s
- Promote Helpful Laws: See Saugatuck Township’s 2024 ordinance and encourage other locales to consider this model ordinance.
Participate in Citizen Science: read an overview and learn more at Globe at Night - Photograph the Stars: Try these instructions for iPhone
Save the date
April 13-20, 2026 is Dark Sky Week
[page updated 20 October 2025]