Light pollution is an international problem. Here you can see the world wide distribution of light pollution. The brighter areas have greater light pollution the darker areas less. This map was created mostly with data from a satellite owned by NOAA, the satellite is called Suomi, it is known as well by VIIRS/DNB. The satellite data has been combined with data from several citizen science programs.
In the box on the left is a compilation of organisations working to increase an awareness of the affects of light pollution and how it can be controlled and reduced.
Do you know an organsation not on this list - let me know.