The New York Times Editorial Page looks at light pollution this week, specifically in New York City. On a 9-point scale, with 1 being truly dark, New York City ranks as a 9 and even the area suburbs seldom reach below a 5.

Environmental groups such as the International Dark-Sky Association have been promoting ways to preserve as much of the night sky as possible by promoting "dark parks" where visitors can observe a true starry night. Kind of a like a zoo for stars.

Better lighting can help reduce light pollution, such as streetlights that aim downward, by keeping the sky dark and cutting the glare in people's eyes. As far as your own home, think about your exterior lighting. It should serve a purpose, mainly one of safety for your household and your guests as they enter and exit your home. Spotlights shining up on a house for just the heck of it? A waste of energy and a form of light pollution.

Here is a conversion chart from the International Dark Sky Association about changing your outdoor lights to fluorescents. Also, here are some neat projects for students of all ages to learn about the night sky.