(Dark Sky Expo, April 13, 2026, Douglas, MI)

• Expo Program
• Join us! Friends of the Night Sky
• Basics: DarkSky Factsheets | 5 Principles for Outdoor Lighting
• Photo: Dave’s Slides are coming! Here’s an Overview for now
• Home Updates: Lighting products | Assessment and Checklist
• Ordinances: What Should One Include? | Dark Sky Template
• Vision: The Rainbow Bridge | Dark Sky Community
• Ecology: ODC Network | Night Flora and Fauna
• Astronomy: SAAA | April 2026 Evening SkyMap
• Citizen Science: Instructions for Globe at Night
• Research: Artificial Light at Night: State of the Science (2025)

Learn LOTS more about light pollution here.