I just saw an article on N. Korea, showing how it appears almost as a "dark sea" between S. Korea and China, as seen from the International Space Station. I understand the point of the article is to underscore the impoverished state of that country under its present political system, but to me it best illustrates how grossly the rest of the world wastes energy by extreme outdoor lighting!
N. Korea uses a tiny fraction of the energy that S. Korea does, but if you look at the second photo of a typical street scene in Pyongyang, though its quite dark by our standards, nevertheless it shows what "safe and sane" outdoor minimum lighting can do. They still use enough light for people to see and get around, but it is so low level, that the city of 3 million people generates as much light pollution as a small town in our country!
We face energy crises everywhere. I think the rest of the world has a lot to learn form this approach.