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[–] PenguinsTapDancing ago 

I heard a great argument that the solution to most light pollution is not reduced illumination, it is properly designed lighting that uses directed illumination. This allows for ground level lighting without creating significant light pollution above that point. This also reduces the amount of power necessary to power the lights in question. The way we do most lighting is very wasteful. Thankfully some cities are changing how they do public lighting.

I found a link to one of the studies for you.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3546378/