Royal Environmental Commission Report on Light Pollution titled "Artificial Light in the Environment."  http://www.rcep.org.uk/reports/sr-2009-light/sr-light.htm  (download report and press release) Related news story http://www.telegraph.co.uk/earth/earthnews/6670550/Less-can-be-more-when-it-... The report gives a good overview of light pollution effects on the environment, including human health.   Rob, if you pass the references on to interested Utah parties. - Kurt