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Why Are Some Streetlights Purple?
Yet there’s been a rise in recent years of reports that some streetlights are giving off a purple haze—a very ... that becomes even more diminished at night. Objects—or people—might ...
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So long, purple streetlights. Only a handful of the lights remain on Wisconsin interstates.
UPDATE: The Wisconsin Department of Transportation said more purple streetlights appeared in the ... lead to interstates being lit purple at night where these lights were highly concentrated.