Kyba and his team analyzed high-resolution satellite imagery to measure the extent of artificial outdoor lighting at night. The past few years have seen the rapid adoption of highly efficient LED lights for indoor and outdoor use. Panel B shows the same region in 2015, after the widespread adoption of LED lighting. Studies have shown, for instance, that judicious use of low-level LED lighting can reduce light pollution without compromising peoples' sense of safety. Lighting companies have been introducing “warm” LED lights that emit much less of the potentially harmful short-wavelength blue light.

Source: Washington Post November 22, 2017 19:59 UTC