Light Pollution. It is not Just About Seeing the Stars. It is an Environmental and Health Concern. — Daniel J. Stein Photography
SKYGLOW - Bortle Scale Light Pollution Guide Map of North America. Help save the skies with SKYGLOWPROJECT.COM and the International Dark-Sky Association. | Facebook
![NASA Earth on Twitter: "Light and noise pollution from humans are negatively affecting bird populations in the United States. Scientists used light data from the @NASA/@NOAA Suomi-NPP satellite to study how light NASA Earth on Twitter: "Light and noise pollution from humans are negatively affecting bird populations in the United States. Scientists used light data from the @NASA/@NOAA Suomi-NPP satellite to study how light](https://pbs.twimg.com/media/Enmc8gdXEAAtzC3.jpg)