US Streetlights Are Turning Purple
https://www.scientificamerican.com/article/streetlights-are-mysteriously-turning-purple-heres-why/
#HackerNews #USStreetlights #PurpleLights #UrbanMystery #TechNews #ScienceExplained
Newly purple streetlights might seem innocuous, but they could affect driver and pedestrian safety
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