What's really needed is very focused lighting that doesn't radiate into space. You can't see the stars anymore in most towns and cities because of sodium and mercury lamps (not to mention incandescent lighting) that light the sky and don't concentrate their light where it's needed.
If this new light source can be designed so the light is cast only where it's needed and not into the sky, that would be a good thing. It would require state or local legislation though.
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