We managed to successfully pass lighting regulations in Pittsburgh last year [0] which will result in about 40k city lights being replaced with much more dark-sky-friendly hardware.
My mother [1], an astronomer at CMU, has been very involved with this effort, and is tracking it with "before" and "after" photography courtesy of the ISS crew.
It is one area of environmental regulation that seems to be pretty easy to make progress on because it's not a partisan issue and the "right way" ends up being cheaper for cities as well as more pleasant.
My mother [1], an astronomer at CMU, has been very involved with this effort, and is tracking it with "before" and "after" photography courtesy of the ISS crew.
It is one area of environmental regulation that seems to be pretty easy to make progress on because it's not a partisan issue and the "right way" ends up being cheaper for cities as well as more pleasant.
[0] https://skyandtelescope.org/astronomy-news/pittsburgh-goes-d...
[1] https://dianeturnshek.com/dark-skies/