The various astronomer societies across America have been whining about “light pollution” for over 10 years.
With all the need for security lights that abound these days, and for good reasons, there are not enough urban places for amateur astronomers to have good views skyward, so they say.
My question is this:
“Since when does a security light endanger the environment?”
Answer: When one of them get shot out by the neighborhood kids, and all that hazmat stuff in the bulb gets all over the neighbor’s lawn.
I wrote a paper on light pollution in 1972. The solutions aren’t necessarily what people think—most involve fixture design that direct light downward where it is needed and limiting the amount going skyward.