Light pollution , also known as photopollution or luminous pollution , is excessive, misdirected, or obtrusive artificial Light Pollution is the adding-of/added light itself, in analogy to added sound, carbon dioxide, etc. Adverse consequences are multiple; some of them may not be known yet. Light pollution competes with starlight in the night sky for urban residents, interferes with astronomical observatories, and, like any other form of pollution, disrupts ecosystems and has adverse health effects. Light pollution can be divided into two main types: Unpleasant light that intrudes on an otherwise natural or low-light setting Excessive light (generally indoors) that leads to discomfort and adverse health effects Light pollution is a side effect of industrial civilization. Its sources include building exterior and interior lighting, advertising, commercial properties, offices, factories, streetlights,...
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