In 1991, the Royal Astronomical Society of Canada established its Light-Pollution Abatement Committee to support measures to reduce Light Pollution. Our mission is to work for social and legislative changes which will result in better, more responsible lighting practices in Canada, and the preservation of the nighttime environment for all to enjoy. This is accomplished by: raising public and government awareness of the problem of light pollution, forming or joining alliances with like-minded groups and organizations, and making representations to governmental bodies. http://rasc.ca/lpa