Actividades t�cnicas/cient�ficas | The Dark Skies Advisory Group (DSAG) of WCPA renewed its members in 2021, therefore strengthening its capacities to provide guidance and advice on reducing night light pollution, particularly in protected and/or natural areas. New members include : Bruno Charlier, Pic du Midi International Dark Sky Reserve Project (France), Ashley Wilson, International Dark Sky Association (USA), Robert Dick, Royal Astronomical Society of Canada, David Goldstein, Northeast Regional Office, National Park Service ( USA ), István Gyarmathy, Hortobágy National Park (Hungary), John Hearnshaw, University of Canterbury (New Zealand), Travis Longcore, The Urban Wildlands Group (USA), Antonia Varela Perez, Fundación Starlight (Spain), Juan José Negro, Doñana Biological Station (Spain), Clive Ruggles, International Astronomical Union Working Group on Astronomy and World Heritage (UK), Woody Smeck, Sequoia and King’s Canyon National Parks (USA), Jurij Stare, Initiative for an International Association for Dark Sky Parks (Slovenia), Karen Trevino, Natural Sounds and Dark Skies Division, National Park Service (USA), Ted Trzyna, Leader, IUCN WCPA Urban Conservation Strategies Specialist Group (USA), John Waugh, Semaphore Inc. (USA), David Welch, Chair, Dark Skies Advisory Group,(Canada),Linda Wong, China Biodiversity Conservation and Green Development Foundation Secretariat | On-going |