making it difficult for star observation. Over-illumination is the excess supply of light used beyond what is necessary for safety and efficiency. Light clutter which refers to the common organizational groupings of lights in cities and roadways. Glare is an impeding bright light which cause temporary impairments to human sight. There are three classifications of glare, blinding glare, disability glare and discomfort glare. Implications of light pollution Light pollution is the adverse effects of artificial light. Affected parties of light pollution include: Astronomers: By increasing the number of participants, the quality of viewing the sky and stars will be temporarily improved. This is of benefit to astronomers who are faced with light pollution issues such as light trespass and skyglow. Nocturnal wildlife: Several animal species have been documented to be affected by light pollution. The glare of street lights causes distraction to nocturnal birds in flight, leading to bird crashes into sky scrapers and buildings. The use of light may also cause birds to reproduce or migrate too early. The feeding behavior of insects, bats, sea turtles, fish, and reptiles reflect alterations by artificial light. Sea turtles mistake the glow of electric lights for the shimmer of the ocean, leading them to flock outside of their nest into hazardous areas. Human circadian rhythm and sleep patterns: Exposure to light during traditional sleeping hours are documented to cause disruptions in the circadian rhythm that regulate human sleep cycles. Biologists have noted a decrease in the amount of melatonin, a natural hormone that regulates the Circadian rhythm, in humans that are exposed to light pollution of the night sky. In order to prevent major impact, biologists suggest increasing the amount of natural light exposure during the day and decreasing the amount of electrical light consumed at night. Growth patterns of plants and trees: The growing pattern of trees have been disrupted and less adjusted to seasonal changes in weather and light exposure. Waste of economic resources: Leaving lights on that are not in use can lead to the waste of economic cost expenditures. Conservation and efficiency is necessary for environmental responsibility. The invention of LED lights, dimmers, motion sensors and times have reduced the amount of energy used. Legislation The best way to take action to promote dark skies is to get involved in local government. There are templates for light ordinances that can legally ban the use of harmful lights and