You may perhaps remember the not so distant time when I was posting astrophotography pictures on this very website. I have also wrote a few times on how we are lighting up our cities too much.
Now a fellow Frenchman, Thierry Cohen, created a series of pictures of what the night could look like if cities like Paris, New York, Shanghai or Sao Paulo were to turn of all their lights. The result is quite stunning.
Not that I am advocating turning off ALL lights at night in our cities, I am just thinking that we should see more stars at night.