The Growing Threat of LED Lights: Dimming Our View of the Stars

The rapid adoption of LED lighting in the United States is causing an increase in light pollution, making it harder to see the stars. New research shows that the night sky is getting 10% brighter every year, with LED lighting being a major contributor. The problem is widespread, affecting not only big cities but also suburban and rural areas. Excessive artificial light not only obscures the stars but also disrupts sleep cycles, contributes to health issues, affects insect populations, and causes bird deaths. Efforts are being made to combat light pollution, such as the Greater Big Bend International Dark Sky Reserve in Texas, where communities are switching to amber-colored streetlights and implementing downward-pointing covers. Awareness and action are key to reversing light pollution.