Updating streetlights to use light-emitting diodes makes sense. LEDs are one of the most energy-efficient lighting technologies that currently exist, according to the U.S. Department of Energy.

Faulty LED streetlights have been turning purple for years across America. As the lights fail, many are replaced. That has led to years of purple streetlights that seemingly appear and then ...

In an effort to deter thieves who steal valuable copper wire from city streetlights and vandals who damage streetlights — and in a nod to renewable energy — Los Angeles has launched a solar ...