Light pollution is a problem not only for astronomers and people who simply want to enjoy the beauty of a starry night. Glare from road lamps, commercial security lights and signs, or even from a neighbour’s bright and misdirected yard lighting can cause discomfort and distraction and adversely affect the quality of life of many people. Light pollution also has adverse impacts on birds and other animals. Many migratory birds, for example, fly by night, when light from the stars and Moon helps them navigate. These birds are disoriented by the glare of artificial light as they fly over urban and suburban areas. It has been estimated by the American Bird Conservatory that more than four million migratory birds perish each year in the United States by colliding with brightly illuminated towers and buildings. Light pollution is considered to be one of the contributing factors in the dramatic decline of certain migratory songbird populations over the past several decades.

Experiments have demonstrated that street lighting also reduces moth caterpillar abundance, when compared with unlighted areas, and is linked to slowed caterpillar development. In addition, studies have shown these disruptions were more evident when streetlights were outfitted with LEDs (light-emitting diodes) than yellow sodium-vapour lamps.

Here are five ways you can reduce light pollution and help preserve Dark Skies in your area of the world. 

1. Use Core Glow stones for all your Outdoor Night Lighting:

Core Glow stones only emit 5-7 candelas of light, and do not 'cast' light as electric lights do. The ambient glow from Core Glow stones is not a source of light pollution, and does not contribute to bright skies at night. Use Core Glow stones to line pathways, steps, and more outdoors instead of bright electric lights. Even better - Core Glow stones do not break and do not require technical expertise to use. Reduce your resource and light pollution impact by choosing Core Glow. 

In fact, Core Glow stones can be used as light pollution indicators. If you are able to see the glow at night, that means you are in an area with low light pollution (lucky you!). If the glow is faint or not visible, that means you are in an area where light pollution is high. Use your Core Glow stones to test your home, yard, and neighbourhood for light pollution hot spots, as well as to find the best Dark Sky spots. 

2. Only purchase IDA Approved light fixtures:

The International Dark Sky Association certifies dark sky friendly light-fixtures that meet their rigorous guidelines. Look for this symbol when you are purchasing new lights: