Our Work What is Light Pollution? There are four types of light pollution: Glare Light Trespass Clutter Sky glow Impacts of Light Pollution Ecosystems Studies show harmful effects on wildlife and plants. darksky.org/eco Energy A huge amount of energy is wasted on unneeded lighting. Generating the wasted electricity produces greenhouse gasses. darksky.org/energy Safety It’s a myth that more light means more safety. Too much light can reduce safety. darksky.org/safety Health Scientific studies show artificial light is linked to many diseases. Darksky.org/health Light Pollution in Colorado Colorado light pollution map The website LightPollution.info provides mapping of a number of different light pollution measures. Colorado has some areas that are quite dark, but the cities contribute an alarming amount of sky glow. Join Now Join the International Dark-sky Association IDA members with a Colorado mailing address are automatically part of the Colorado chapter. Colorado chapter members get a monthly newsletter and other benefits.