Streetlights, greenhouses, and satellites are mong the many sources.

By applying these principles, properly designed lighting can be beautiful, healthy, and functional.

What you need to know to: choose better outdoor lighting, pass a lighting ordinance locally, and much more.

When citizens band together to enact local legislation, light pollution advocacy can make great strides.

DarkSky works to restore the nighttime environment and protect communities and wildlife from light pollution.

A bold new plan to slow the growth of light pollution and begin to reverse it.

The dark sky movement is bursting with many successes, starting with 1958’s first-ever dark sky legislation.

We’ve come a long way in 30+ years, growing from a small Arizona-based nonprofit into the world’s leading authority on light pollution.