Amy Adams

Light pollution found to be wasteful and harmful

Light pollution refers to excessive and unproductive artificial light that intrudes on the night landscape. Sometimes light pollution results from too many light sources crowding an area, which produce more light than needed. More often, light pollution results from lighting structures that direct light poorly, usually to the extent that less than half of the light emitted is used for the intended purpose of illuminating a particular object or patch of ground. Remaining light is wasted, usually radiating into space, illuminating unintended areas, or casting glare that interferes with night vision and surveillance.