GLOBE at Night
An international citizen scientist project to measure the degree of light pollution all around the world using the human eye. Contains star charts corresponding to different light pollution levels, and allows visitors to download a map of past observations in their area.
International Dark-Sky Association (IDA)
A non-profit member organization that teaches others how to preserve the night sky through factsheets, law references, pictures, and web resources.
9th European Symposium for the Protection of the Night Sky
Videos and abstracts of the scientific presentations from the symposium that took place in Armagh, Ireland in 2009.
Atlas of World Light Pollution
A comprehensive atlas of satellite images and artificially created maps of different light pollution measurements covering the globe.
Conference on the Ecological Consequences of Artificial Night Lighting
Comprehensive information about a conference on ecological effects which took place in February 2002 including abstracts and references on the topic.
Dark Skies Northwest
News, video, slide-shows and images. Includes outdoor lighting codes, mailing list subscriptions, member information and links to further regional information.
Dark Skies for Northern Ireland
Explains the problem in Northern Ireland with photographs; maps of its extent, and information on its effect on residents and crime. Includes a message board, help on installing friendlier lighting fixtures, links and correspondence on regulation with a local MP.
Dark Sky Finder
An overlay of a light pollution map on the Google map of North America. Also lists hundreds of possible observing sites.
Dark Sky Meter
A citizen science app for iPhone that allows users to measure the brightness of the night sky using the phone's camera.
Del Mar Fans and Lighting Education Center
A commercial lighting site with a detailed primer on light pollution and best practices.
EU COST Loss of the Night Network (LoNNe)
An interdisciplinary network of European researchers studying artificial light at night.
Hawaiian Astronomical Society: Why You Can't See the Stars
Features links and information on light pollution relevant to Hawaii.
IYA Lightmeter wiki
Information about the International Year of Astronomy light meter in a wiki format.
Illinois Coalition for Responsible Outdoor Lighting
Illinois organization serving to promote responsible outdoor lighting. Includes a very large collection of light pollution links.
International Astronomical Union Working Group on Light Pollution
Explains how the working group is helping to combat the problem at the moment and how anyone can help. Also includes various links and general information.
Light Pollution Fact Sheet
A basic fact sheet on light pollution, with terms explained in layman's language. Provided by the Prairie Astronomy Club.
Light Pollution Literature
Up to date bibliography of research on light pollution and animal responses to light. Includes links to many journal articles.
Light Pollution Monitoring Network powered by GADS (Italy)
Provides data taken worldwide with Sky Quality Meters, and contains instructions for users that want to join the network.
Lighting in the Countryside: Towards Good Practice
Comprehensive online UK Government publication outlining the government's policy on the issue. Also a good general introduction to the problem.
Loss of the Night App
A citizen science app for Android devices that allows users to estimate the brightness of skyglow by observing which stars are visible.
Loss of the Night citizen science project
A blog about the Loss of the Night app. Also occasionally features examples of good and bad lighting from around the world.
Midwest Citizens for Responsible Outdoor Lighting
Information about lighting regulations in the Midwest USA, with many links including a very large bibliography of papers related to the biological impact of light at night.
NOAA DMSP homepage
Provides information about the Defense Meteorological Satellite Program, including yearly global light pollution measurement data which can be downloaded
North Carolina IDA (NCIDA)
Includes images, information and local legislation relevant to North Carolina.
Pennsylvania Outdoor Lighting Council (POLC)
Comprehensive information on the latest lighting situation in Pennsylvania with pictures, links, and guidance on how anyone can help. Home of Pennsylvanians for an Outdoor Lighting Control Act (POLCA).
Rate Your Skyglow - Visual Observing
A guide for comparing skyglow observations to the Atlas of Artificial Night Sky Brightness.
Rose City Astronomers: Oregon Dark Skies
Includes a information about the effects of light pollution and local darksky sites.
Royal Astronomical Society of Canada (RASC) Light Pollution Abatement Program (LPAP)
Describes the program, and contains information about Canadian dark sky parks in both urban and pristine areas.
Santa Clara Valley Lighting & Lick Observatory
Offers lighting suggestions for Santa Clara Valley to preserve the observing capabilities of Lick. Includes a primer on light pollution and astronomy.
Sensible and Efficient Lighting to Enhance the Night-time Environment (SELENE), New York
SELENE is working to eliminate inappropriate lighting in New York. Extensive website with facts and information about helping to fight for better lighting legislation in the city.
Sky Quality Protection Technical Office of the Canaries
Includes pictures and animations, and information on full-cut-off lighting, technical specifications, energy efficiency, and other forms of astronomical pollution, as well as the applicable laws in the Canary islands.
Skyglow across the Great Lakes
Four Images of sky glow from both sides of Lake Michigan in the USA.
Soltactics is a commercial site that sells a shuttered skylight. It is designed to close at night to eliminate the light pollution radiated upwards by traditional skylights.
Understanding, Assessing and Resolving Light-Pollution Problems on Sea Turtle Nesting Beaches
Comprehensive report by the Florida Marine Research Institute into the effects on turtles with relevant lighting specifications to be implemented near nesting sites.
University Lowbrow Astronomers: Light Pollution Issues
Information and links relevant to South-East Michigan, United States. Covers local regulation.
Verlust der Nacht
An interdisciplinary research project in Germany that considers light pollution from technical, social, ecological, and health perspectives.
Virginia Outdoor Lighting Taskforce (VOLT)
Promotes the use of safe and efficient outdoor lighting. Comprehensive website with everything there is to know on the problem in Virginia and the latest on VOLT's campaign for better lighting ordinances.