Sacramento is one of California’s most light polluted cities. The Bortle scale is a nine-level numeric scale measuring the night sky's brightness of specific locations with one being perfect ...

New research has revealed for the first time the full extent of how Artificial Light At Night (ALAN) is increasing carbon released by plants and animals across continents – without any increase in the ...

For most of human history, darkness was a constant. The rhythms of nature, wildlife behavior, and even human sleep evolved under predictable cycles of day and night. In the past century, however, ...

Recent scientific findings have revealed a startling connection between nighttime light exposure and cognitive health, particularly regarding early-onset Alzheimer’s disease. This groundbreaking ...

Artificial light is growing across the planet faster than almost any other human influence. Once limited to towns and highways, that glow now touches roughly one quarter of all land ecosystems. The ...