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Persons who are interested in night sky preservation, intrusive light control, night-driving glare and safety, light trespass, and health effects should see the extensive information at the website of the International Dark Sky Association. A membership in DIA will support this effort and provide current information. Yahoo groups has two discussion lists on the subject of outdoor lighting: Outdoor Lighting-Forum and one devoted to Dark Sky Association topics IDAOLF · The IDA Outdoor Lighting Forum |