The Unexpected Origin of the Climate Crisis wn.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wn.com Daily Mail and Mail on Sunday newspapers.
How dark is your night sky? In Illinois, there are no known Class 1-3 dark sky sites. We ve obscured them all with our outdoor lights. The Chicago Chapter of the International Dark-Sky Association is encouraging residents to measure the presence of artificial light at night and the intensity of that light in your neighborhood.