Kilrah_il writes: Light pollution is a big problem this days, affecting not only astronomers and wild life, but also everyone else because of wasted energy. GLOBE at Night aims to raise awareness by urging people to go outside and find out how much light pollution there is in their area. "The campaign is easy and fun to do. First, you match the appearance of the constellation Orion in the first campaign (and Leo or Crux in the second campaign) with simple star maps of progressively fainter stars found. Then you submit your measurements, including the date, time, and location of your comparison. After all the campaign’s observations are submitted, the project’s organizers release a map of light-pollution levels worldwide."