Natural Lightscapes

Cool link of the day:

What are Natural Lightscapes?
A "Natural Lightscape" is a place or environment characterized by the natural rhythm of the sun and moon cycles, clean air, and of dark nights unperturbed by artificial light. Natural lightscapes, including dark night skies, are not only a resource unto themselves, but are an integral component of countless park experiences.

See how the National Park Service is working to perserve the lightscape:

http://www2.nature.nps.gov/air/lightscapes/