Dark Skies Awareness: An IYA2009 Cornerston Project - Learn about adverse impacts of excess artificial lighting on local environments and participate in monitoring events to help more people appreciate the ongoing loss of a dark night sky for much of the world's population.
GLOBE at Night - An annual global sky observation, GLOBE at Night brings people outside to observe the constellation Orion from 16-28 March 2009. Offers star-hunting tips for families and for teachers and students.
International Dark-Sky Association - Nonprofit membership-based organisation that aims stop the adverse environmental impact of light pollution and space debris.
Night Sky in the World - Satellite monitoring of nocturnal light pollution around the world, and its impact on stellar visibility. Includes maps and images from the Light Pollution Science and Technology Institute.
Pennsylvannia Outdoor Lighting Council - Goal is to reduce light pollution by educating the public about the safety and nuisance problems of obtrusive and inefficient lighting.
