Amber LEDs: A Tiny Change, Big Win for Insects

Scientists have discovered a straightforward modification to urban lighting that could dramatically decrease insect mortality from nighttime light pollution. Studies conducted along German railway lines revealed that amber LED lights, emitting minimal blue light, attracted significantly fewer insects.

These amber LEDs reduced insect abundance by approximately 40-44% over two years compared to conventional white LEDs and sodium lamps. This development is crucial as artificial lighting is a significant factor contributing to global insect population declines and threatens biodiversity.

The research, carried out in Brandenburg, Germany, monitored nearly 71,000 insects. The findings, published in Biological Conservation, highlight the potential for this lighting change to protect threatened and legally protected insect species, making essential urban infrastructure more wildlife-friendly.