Sky and Telescope (12 October 2021)

Pittsburgh Goes Dark: Could This New Dark-Sky Ordinance Begin A Trend?

Is this the beginning of the end for cheap blue LED lights used in public lighting? “It’s too soon to tell,” says John Barentine (now at Dark Sky Consulting), who was peripherally involved in the effort while employed at the International Dark-sky Association. “I think that has been in motion for a while now, and it has been driven by a combination of public rejection of those bluer LEDs in favor of warmer lights, and generally better affordability of those warmer LEDs.”

Read more: https://skyandtelescope.org/astronomy-news/pittsburgh-goes-dark-could-this-new-dark-sky-ordinance-begin-a-trend/​