Thousand Hills State Park superintendent Ryan Persinger poses next to one of the park’s cabins. The flat, square light built into the cabin’s awning behind him produces less light pollution than the ...

Whether one of your lights went out and you only have an LED bulb on hand to replace it with, or you've decided to completely replace all of your incandescent and fluorescent lights with LED bulbs, ...

Humans have inadvertently filled their towns and cities with outdoor lighting that generates a lot more light pollution than is necessary. This costs communities their starry nighttime views. It also ...