![TIL since 2020, white LED streetlights have been turning purple because of a defect during the manufacturing process between 2017 and 2019. The yellow phosphor coating was delaminating, and the blue LED TIL since 2020, white LED streetlights have been turning purple because of a defect during the manufacturing process between 2017 and 2019. The yellow phosphor coating was delaminating, and the blue LED](https://external-preview.redd.it/til-since-2020-white-led-streetlights-have-been-turning-v0-XceV_nRvI4tIDDuPzkNpiRFf4JlSUJPE5a_k9i3GxRs.jpg?width=640&crop=smart&auto=webp&s=3e89e8cb267b948ad1b72e17b6a8714a2802e044)
TIL since 2020, white LED streetlights have been turning purple because of a defect during the manufacturing process between 2017 and 2019. The yellow phosphor coating was delaminating, and the blue LED
![Recently, a debate has arisen about LED and light pollution. LED is a revolution from the lighting industry and the best light source on the market now. Recently, a debate has arisen about LED and light pollution. LED is a revolution from the lighting industry and the best light source on the market now.](https://i.pinimg.com/736x/89/69/a1/8969a1b1bd63f971ee41d8ac01bedb1c.jpg)
Recently, a debate has arisen about LED and light pollution. LED is a revolution from the lighting industry and the best light source on the market now.
![LED streetlights are energy efficient, but are they environmentally friendly? It's complicated | WLRN LED streetlights are energy efficient, but are they environmentally friendly? It's complicated | WLRN](https://npr.brightspotcdn.com/dims4/default/9297060/2147483647/strip/true/crop/3024x4032+0+0/resize/880x1173!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2F22%2F0e%2Fc946baf3471a9bfa462e893743b2%2Fimg-2304.jpeg)