There is a growing threat known as light pollution in today's society. Light pollution is essentially excessive light from outdoor lighting fixtures that is used improperly and causes numerous negative effects. This growing and perplexing problem is often amplified by industrialization and urban development which often neglect to consider the epochal problems caused by light pollution. Despite serious efforts to minimize light pollution, “…light pollution increases approximately 6% each year” (Parks 30). You should know what light pollution entails, the negative effects and costs of light pollution, the ways in which it can be minimized and how to appeal to the general public to help alleviate the problem. In more complex terms, light pollution is known as intrusive light or scattering light. Stray light is “[l]ight emitted by a lighting system that falls outside the boundaries of the property on which the system is located” (von Maltitz 1). This type of light can be measured through the vertical illuminance, the light intensity, the threshold increment and the ratio of upward scattered light (von Maltitz 1). Creating artificial or artificial light essentially pollutes the natural light of the night sky. Common examples of light pollution include sky brightness, glare, overlighting, light trespass, and clutter. Skyglow is the clearing of the night sky often seen as a halo appearing over urban areas (Chepesiuk 3). Glare means disproportionate brightness that creates visual discomfort (“Light pollution and human health”). Overlighting refers to artificial light used that exceeds that needed for a task. Light trespass is light that occurs where it is not intended, such as a streetlight spilling onto an area that would have been dark. The disorder is me... in the center of the paper......M. Mitchell. “The Economics of Global Light Pollution.” Ecological Economics 69.3 (2010): 658-665. Premier of academic research. Network. November 20, 2011. International Dark-Sky Association. Light pollution and human health. Tucson, Arizona: International Dark Sky Association. Gildea Foundation, June-July 2009. Web. .International Dark Sky Association. Light pollution and wildlife. Tucson, AZ: International Dark-Sky Association, 2008. Gildea Foundation. Network. .Parks, Bob. “The battle to control light pollution.” Sky and Telescope 122.3 (2011): 30-34. Premier of academic research. Network. November 20, 2011.von Maltitz, LJ "Light Pollution: Are You a Culprit?" Web of the International Dark-Sky Association Inc. 11 November. 2011. .