FLAGSTAFF — Since the passage in the 1980s of Flagstaff's comprehensive lighting ordinance, the golden hues of low-pressure sodium lights have come to prevail in Flagstaff skies. They are a response ...
Manufacturers originally designed double-ended high-pressure sodium light bulbs so they would be compatible with double-ended metal halide fixtures. Traditional single-ended high-pressure sodium bulbs ...
Researchers will begin testing special lighting this summer that could illuminate beachside parking lots, boardwalks and parks without luring sea turtle hatchlings to their deaths. Bright lights on ...
The end is in sight for most of the yellow-tinted street lights around Rancho Bernardo and Poway. Crews working in Rancho Bernardo will have completed the swapping out of low-sodium lights with new ...
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