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

Light pollution erasing views of the stars and planets - New

All About Landscape Lighting - This Old House

Strong Visitor Support for Steps to Limit Light Pollution (U.S.

Opinion: Outdoor lighting choices can obscure the night sky - The

Tips for The Best Stargazing - Hammock Universe Canada

Dark Sky Initiative - Lightcraft Outdoor

Science of Light - Night Skies (U.S. National Park Service)

Responsible Outdoor Lighting at Night (ROLAN) manifesto for

Reduce Light Pollution with Better Outdoor Lighting

What is Light Pollution?

The Problems of Light Pollution, At the Smithsonian