Light pollution and LED lighting is complicated. LEDs appear to reduce light pollution as they are much more directional. They are also far brighter than sodiu

Light pollution and LED lighting is complicated. LEDs appear to reduce light pollution as they are much more directional. They are also far brighter than sodium with better color rendition. Because of this we get images that look like light pollution is reduced: http://singularityhub.com/wp-content/uploads/2013/10/LA_LED_Skyline_Before_After.jpg http://singularityhub.com/wp-content/uploads/2013/10/LA_LED_... http://i.imgur.com/XHqUPOY.jpg http://i.imgur.com/XHqUPOY.jpg http://wpmedia.ottawacitizen.com/2014/05/photo-of-new-led-street-lights-taken-on-carling-ave-looking-east-across-the-st2.jpg?w=1000 http://wpmedia.ottawacitizen.com/2014/05/photo-of-new-led-st... Unfortunately, light reflects. Particularly off of snow. What appears to be a reduction in light pollution is in fact a dramatic increase in brightness, resulting in lower exposure photographs that appear to have darker darks. http://www.universetoday.com/107372/leds-light-pollution-solution-or-night-sky-nemesis/ http://www.universetoday.com/107372/leds-light-pollution-sol... LED lighting is awesome but it won't darken our sky for stargazers.