Stretches of some of the city’s busiest thoroughfares are inadequately illuminated, the city police have found. The police have written to the PWD seeking that the yellow sodium vapour lamps be ...

Two much-publicized electrical companies—General Electric and Westinghouse—supply most of the U. S. with lamp bulbs. In Europe that function is performed chiefly by potent Philips Glow-lampworks of ...

The yellow light of sodium vapour lamps in street lights will soon be a thing of the past in the city. The project to replace all energy-guzzling sodium vapour lamps with LED lights has finally taken ...

Mayflies emerge when deep water temperatures reach 68 degrees, which hasn't happened yet in the Great Lakes. Residents can mitigate mayfly presence by using yellow light bulbs and sealing windows and ...

Plans to improve the education of America's youth usually focus on boosting reading or math skills, but a Toronto psychologist thinks there may be an equally effective way to better performance: ...

The city is phasing out harsh white streetlights in favour of warmer tones, guided by new lighting principles. Bratislava’s streets will soon shine with warmer light as the city replaces the cold ...

I’ve noticed when the city repairs broken streetlights that sometimes they install a new LED light and sometimes they do not. I would think they want to convert all the streetlights to LED lights when ...

Mayflies are aquatic insects with short adult lifespans, often only a few days for males and possibly minutes for some females. Emerging in early summer when water temperatures reach 68 degrees, ...