nocturnal species are sensitive to the blue range of light as they have evolved to use the moon to navigate and bright in the blue the more distracting it is to test how species respond to other parts of the spectrum the research shows have put up almost $200.00 lamp posts around the country that shine a range of colors. if you take away to a new part of the spectrum and and compensate by a bit more rats which you actually see here. and it may actually be less intrusive for these not in a species not those bees may not perceive this like this intense and that's exactly what we have observed. a different kind of red light is all the rage in amsterdam and the city's nocturnal inhabitants are out in all the splendor. light here has become so bright it is now considered a pollutant. the world over brightness and luminosity are growing at a rate of 2 percent per year. as the night gets more illuminated studies are linking light pollution to destructive natural cycles as well as mental health in humans. the international dark sky association has called for a massive reduction in light leakage as