> their low cost and efficiency has enabled a huge expansion of outdoor lighting. This is exactly it. Leaving half a dozen LEDs on all night long is far cheape

> their low cost and efficiency has enabled a huge expansion of outdoor lighting. This is exactly it. Leaving half a dozen LEDs on all night long is far cheaper than doing the same with traditional lighting. Then you have those stupid strings of warm white LEDs that I assume are intended to look like candles and are apparently all the rage right now. To say nothing of the couple of houses across the valley that have motion lights--at the end of their driveway--activated either by a brisk breeze or errant skunk. What worries me isn't so much whether light pollution is contributing to mass insect deaths (that seems debatable); it's that light pollution is getting so much worse that appreciating the night sky is going to become increasingly harder for more and more of the population.