To whom it may concern. Summary of the "International Conference on Light Pollution" held in La Serena, Chile from 5 to 7 March 2002. The conference has been a great success! We had 132 registered participants from 12 different countries in 4 continents, with 13 accompanying guests making it a much larger gathering than we had expected for such a specialized topic! More than 17 invited talks were given as well as several oral and poster contributions. In addition to visible (optical) light pollution, radio frequency interference with radio and (sub)mm wave astronomy, space advertising, and aircraft contrail pollution were discussed. Some highlights (all are available in full on our website indicated below) were: P.Daud- CONAMA representative speech F.Falchi-First world map of true light pollution (LP) L.Alvarez-report on International Dark-Sky Assoc. activities J. Diaz, P.Sanhueza,R.Wainscoat- reports on the activities on LP control in Spain, Chile, and Hawaii respectively. J.Cohen,E.Hardy,T.Hasegawa,G.Delgado,L.Nyman-reports on radio frequency work M.Metaxa-report on educational activities in Greece and Europe N.Zeitlinger-report on an experiment that raised public awareness of LP E.Piraino-report on the work of the photometric lab in Valparaiso, Chile A.Heck-Space advertising H. Pedersen-Aircraft contrails and several other interesting talks. Many companies from both Chile and abroad displayed their light fixtures and other products, many important local and national authorities attended, and during the opening session we had both the present- and the ex-intendente of the 4th region present. The ex-intendente, Don Renan Fuentealba, has always supported our light pollution cause and we are happy that the present intendente, Don Felipe del Rio, has shown strong interest in astro-tourism with the associated control of light pollution. Another highlight of the conference was the founding of the Chilean section of the International Dark-Sky Association. During a meeting the main points of the agreement between the Chilean IDA members and the USA IDA representatives for the establishment of the Chilean section were settled and Chile now has an official IDA section. For more information you can visit http://www.polucionluminica.cjb.net or http://www.redastro.cjb.net (both in Spanish). Several awards were made to individuals, companies and towns who had made an especially strong effort for the cause of light pollution reduction. We had a lot of very positive press coverage: national TV, local TV and radio, & Cable TV covered our press conference and broadcast several interviews; we had full page spreads on all 3 days of the conference in regional papers, (one day a double page!) and a one page spread in the biggest national paper, El Mercurio. Weeklies also published articles and photos of the various events. The generally sensed worry among people about what conversion to "good" public lighting involves is clearly on the retreat and there is more awareness that "good" also means saving money, & more security for pedestrians and drivers alike, in addition to saving the night sky for generations to come.We feel that our message: "We will all be winners!" when light pollution is controlled, has now reached many people in Chile. The round-table at the end of the conference and a meeting of members of IAU Commission 50 Working Group on light pollution came to the following conclusions and recommendations: Help in securing funding for the 2nd world atlas of light pollution (Cinzano et al.) Help the International Telecommunications Union extend its brief to include IR and Optical Frequencies. International Educational Networking: stimulate initiatives for international education on LP, involving teachers, videocons, internet etc. The excellent work of M.Metaxa was noted by the WG. Stimulate the monitoring of LP from groundbased observatories worldwide. The All Sky Cameras initiative at CTIO/NOAO was noted by the WG. In the near future, the Chilean DS686 law on light pollution will need some revision. Advances in the technology of lamps has made certain sections of the law ineffective and some additions and refinements to put the law more in line with internationally agreed standards are indicated. The inclusion of radio frequency interference may need to be considered. On a more practical note: the presentations are available on the web site http://www.ctio.noao.edu/~emond/lpc/lpc-presentations and you are most welcome to have a look at them. Also have look at http://www.opcc.cl for much information about light pollution control in Chile. The next stage is the publication of the proceedings. We are at present negotiating with a major science publisher in Europe and have had an offer from a US publisher. We are looking forward to a bright -but un-polluted- future on a world wide scale! Hugo E Schwarz, Conference Organizing Committee Chair. Malcolm G. Smith, Chair IAU50 Working Group "Controlling Light Pollution".