And it will have taken about eight years in all to swap out all of those old-style streetlights across Mankato with high-efficiency LED lights. It was the summer of 2017 when a private electrician ...

GRAND RAPIDS, MI -- Grand Rapids leaders have approved a $9.46 million contract to convert all city street lights to LED lights. City officials say the move will generate about $350,000 annually in ...

Dickson City is about to be brighter. Borough council voted this month to approve a resolution with PPL where the electric utility will convert all of the borough’s streetlights to LED in the spring.

Pittsburgh officials are considering moving ahead with a plan to convert the city’s streetlights to LED lights. City Council gave preliminary approval Wednesday to pay The Efficiency Network, a ...

Rick Newman's backyard in east Boca Raton has that Old Florida vibe: A swimming pool is surrounded by live oaks and palms. For years, the trees' lush canopy has kept the area shaded against the sun, ...

Light pollution blues: photographs of London taken on board the ISS in 2012 (left) and 2020 (right). The images show the whitening and brightening of the city. (Courtesy: A Sánchez de Miguel et ...

To the editor: For decades, millions of people in the greater Los Angeles area grew to like the orange light from the sodium streetlamps. Astronomers fitted their telescopes with sodium eyepiece ...

UVB has utility in processes such as detoxifying pollutants and treating dermatological disorders, but it can only be produced by inefficient and environmentally harmful methods. Research teams have ...

Fukuoka, Japan—An international team of researchers from Japan and Germany has developed a new system that upconverts blue LED light into high-energy Ultraviolet B, or UVB, light. As the system does ...