Sustainable Outdoor Lighting Principles - Night Skies (U.S.

Commercial Solar Outdoor Lighting

LED lights are erasing our view of the stars — and it's getting

Responsible Outdoor Lighting at Night (ROLAN) manifesto for

Best outdoor lighting to minimise light pollution - BBC Sky at

Five Principles for Responsible Outdoor Lighting

Our strategy DarkSky International

Light Pollution: Causes, Effects, and Solutions

Reduce Light Pollution with Better Outdoor Lighting

Dark Sky Parks & Places - Utah Has The Most On Earth

The Camper's Guide to Dark Sky Camping and Astrotourism - Campspot

Light at Night - Illuminating Engineering Society

Dark-sky preserve - Wikipedia

Why Dark Skies Matter

Responsible outdoor lighting

Light at Night Department of Energy