For almost five billion years the earth has known night and day.  The biology of nearly every living thing has evolved in this cycle making it nature's clock guiding sleeping, feeding, breeding, migration, and more. As a result, turning night into day has biological consequences for insects, animals, and humans. 

But, for humans, there is another consequence of light-pollution.  Only a few generations ago the night sky was an intimate part of every human life. Orion, the hunter, stalked the winter skies while Scorpio pursued him six months behind in the summer sky.  For our more distant ancestors, the night sky was clock, calendar, compass, and Netflicks as they hung stories of their gods, heroes, and villains on the patterns they saw in the stars.  Today, in our daily lives, a veil of light separates us from the reality of our place in the universe.

As light pollution is wasted energy there are economic, and climactic costs in addition to the biological, and social costs.  The good news is, we can have the benefits of artificial lighting and nature too by lighting responsibly. This website is your guide to how to light responsibly, how to enjoy experiencing nature at night, what ANSA is doing to preserve nature at night, and the environment in general.

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