SUNSET: 
Explore the Night with Bob King
How Dark Is Your Night Sky?
Traditional and digital tools can help you learn the naked-eye magnitude limit of your sky and find out if the darkness has changed at your observing site.
Saving Dark Skies - How to Help
Starry Success: Protecting the Night Sky Above La Palma
Ten years ago, La Palma was declared a "Starlight Reserve" and measures were implemented to protect its skies from light pollution. How did they work?
Measuring the Impacts of Light Pollution
Light pollution is pervasive, and its impact on people is larger than you might think.
Saving Dark Skies - How to Help
It's International Dark-Sky Week!
What began as a student's simple idea a decade ago has grown into a worldwide celebration of the night sky and easy ways to reduce light pollution.
Astronomy and Stargazing Projects
Help Keep Our Skies Dark — Join IDA Today
It's high time that we amateur astronomers got serious about protecting the night sky from light pollution.
Rate the Darkness of Your Sky
A new website shows how light pollution spreads around the globe — using data gathered by its users.
AMA Addresses Light Pollution
The American Medical Association has released a report detailing several possible health concerns related to nighttime light exposure. But some lighting researchers worry the conclusions are more alarmist than is warranted.
Saving Dark Skies - How to Help
U.S. Physicians Join Light-Pollution Fight
Thanks to a full-court press by a cardiologist with a passion for astronomy, the American Medical Association has taken a stance in the fight to make outdoor lighting more benign to humans — and to the stars above.
Saving Dark Skies - How to Help
Rate Your Skyglow
Light pollution is most amateur astronomers' worst enemy. Learn here how to measure and describe how brightly your sky glows.
Saving Dark Skies - How to Help
111 Deep Sky Wonders for Light-Polluted Skies
Bright skies aren't empty skies. See for yourself how many treasures lie hidden in the glow of a city sky.
Saving Dark Skies - How to Help
Good-Neighbor Outdoor Lighting (Flyer)
This flyer (which can also be printed as a PDF) tells you everything you and your neighbors need to know about how to address light pollution in your neighborhood.
Saving Dark Skies - How to Help
Your Home Lighting Guide
How to light your home safely, save energy, and decrease light polluion at the same time.
Saving Dark Skies - How to Help
Bright Lights, Big Problems
In the war against light pollution astronomers have gained important new allies -- and new insights into how we see at night.
Saving Dark Skies - How to Help
How I Beat Light Pollution in My Hometown
You don't have to fight city hall. To ban bad lights, make city hall your friend.
Saving Dark Skies - How to Help
Home Lighting Guide
Here's how to find exterior residential lighting that's dark-sky friendly.
Saving Dark Skies - How to Help
Jennifer Barlow: Dark-sky Devotee
One person can make a difference, as demonstrated by a high-school student's single-handed effort to help us all appreciate the night sky.
Saving Dark Skies - How to Help
Good Lighting Fixtures: Where to Get Them
Here's a selection of manufacturers and suppliers of good lighting equipment.
Saving Dark Skies - How to Help
Gauging Light Pollution: The Bortle Dark-Sky Scale
Excellent? Typical? Urban? Use this nine-step scale to rate the sky conditions at any observing site.
Saving Dark Skies - How to Help
Join the Fight Against Light Pollution
Only a tiny fraction of amateur astronomers do anything to help reduce bad outdoor lighting. We need to change that.
