Presentation explaining the problem that unshielded lighting presents to boat crews and how it can cause boating accidents. [Requires Microsoft Powerpoint]

Learn how glare can affect anyone with this concise information page collated by the Astronomical Society of Greater Hartford. Includes lots of links.

Includes a information about the effects of light pollution and local darksky sites.

Use this site to find a light-pollution-free location. View conditions from various cities around the world.

The IESNA is the authority on the lighting industry in the USA, Canada and Mexico and one of the forerunners in the control of this form of pollution. Information available on manufacturers, acceptable designs and lighting codes.

Explains how the problem is and can be tackled in Canada with the LPAP. Contains helpful Canadian information.

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.

Webpage of the Pennsylvania Department of Environmental Protection explaining some effects of obtrusive lighting.

Forerunner in light pollution control in the UK. Publishes lighting codes and guidance available via the website. Website content is minimal.

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.

Technical information and guides to the design of non-polluting lighting. Includes links to similar regional organizations.

News, video, slide-shows and images. Includes outdoor lighting codes, mailing list subscriptions, member information and links to further regional information.

Includes information on good & bad light fixtures, hidden costs and health risks with pictures and links.

A non-profit member organization that teaches others how to preserve the night sky through factsheets, law references, pictures, and web resources.

A local astronomy site with comprehensive information about the local darksky park including directions; as well as videos on the problem, and information about its effects on health and astronomy.

Comprehensive information about a conference on ecological effects which took place in February 2002 including abstracts and references on the topic.

Explains the problem, and has pictures, news, local legislation and a message board specific to Michigan.

Includes images, information and local legislation relevant to North Carolina.

Includes local information relevant to New Hampshire and NHCRL newsletters. Minimal web content.

Features links and information on light pollution relevant to Hawaii.

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.

Includes information on this pioneering committee and what they do. Also includes lists of books, magazine articles and weblinks. Much of the information is out-of-date.

Latest news on the abatement of light pollution in Texas and how anyone can help.

Comprehensive information on the abatement of light pollution in Indiana including general links and resources as well as updates.

A short article explaining the problem which appeared in the Winter 1994 issue of the ANJEC Report.

Lick Observatory is exploring ways in which the lighting needs of the growing Santa Clara Valley can be met while still preserving Lick's position at the forefront of astronomical research. Also includes relevant links.

Includes pictures and animations, and information on full-cut-off lighting, technical specifications, energy efficiency, and other forms of astronomical pollution. Also includes the laws applicable in the Canary islands.

A webpage explaining the history and objectives of the organisation, and how to become a member.

Various articles about light pollution including one on the history of the problem, one on rating the darkness of your sky, one on how astronomers can do more to help reduce light pollution and one on good lighting fixtures.

Two detailed light-pollution maps of Minnesota and various astro-photographs.

Information and links on stargazing in one of the darkest sky sites in Eastern USA

Online community of New York anti-light-pollution campaigners with photographs, newsletters, legislation and other local resources.

A research paper investigating the development of and possible solutions to light pollution.

Includes a range of general information about how anyone can improve their lighting as well as information on how the group is combating the problem in Sydney.

Contains technical information on the subject.

A short explanation of the problem.

Webpage detailing conclusions of a meeting held in Asiago, Italy on the issue.

A comprehensive atlas of satellite images and artificially created maps of different light pollution measurements covering the globe.

A page by a group of astronomers fighting the problem.

Information about a children's story book on the problem.

Information about the fight against light pollution in Yerkes, William's bay. Includes pictures, ordinances, presentations and links.

A light-pollution map of Minnesota, a news story about local light pollution and information about what can be done locally.

RSPB page discussing the detrimental effects on birds.

Information about the problem in Croydon.

Provides information about light pollution for young people.

Personal "sermon" on light pollution by a Ohio resident with various bits of information on the topic.

Information about the science-year project on light pollution at Shire Oaks school. Includes photographs, explanations of the problem and its causes & effects and a light pollution questionnaire for pupils.

A comprehensive website explaining what the problem is and how it can be tackled in the UK. CfDS is the UK's largest anti-light-pollution campaign group and part of the British Astronomical Association.

Extensive maps and data charting the extent of light pollution in Italy and the effectiveness of its control using lighting codes.

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.

Comprehensive report by the Florida Marine Research Institute into the effects on turtles with relevant lighting specifications to be implemented near nesting sites.

Explains how light pollution can and is been controlled in Malta. Lots of links. LPAG is a part of The Astronomical Society Of Malta.

Information and links relevant to South-East Michigan, United States. Covers local regulation.

good and bad lighting images with explanations, a local survey with results, a local lighting ordinance, and local news articles by an astronomer from Michigan, United States.

Essays on the causes and effects of light pollution, as well as information about local regulations to combat the problem.

Explanatory information, links, news, photographs, a mailing list, FAQ's and personal stories from this region of Canada.

A basic fact sheet on light pollution, with terms explained in layman's language. Provided by the Prairie Astronomy Club.

Aimed at improving the quality of exterior lighting in Ireland and reducing light pollution.

Introduction to the problem's effects and its minimisation. Includes success stories in the UK and elsewhere; good and bad examples of different fixture types; rebuttals of common misconceptions; links to news articles, and details of educational projects and how the public can help.

Includes lighting pictures, satellite images, the latest news, lots of links and information about how to shield lighting.

Images of sky glow from both sides of Lake Michigan in the USA.

Information about the international non-profit organization and why they are campaigning for better lighting, a golssary of lighting terms, technical information, links to related publications and standards.

A short page explaining how lighting can be made to reduce the astronomical effects of pollution by Manchester Astronomical Society.