“The longest night of the year will be on Dec. 21, the winter solstice. For about a century, Earth’s nights have not been as dark as they once were because of artificial lighting that comes from sources like street lights, neon signs and car headlights.
In this installment of our “After Dark,” series, we hear from Boise State University professor, Jesse Barber, who’s studying how lighter nights are affecting animals and insects and how an experiment in Grand Teton National Park could mitigate the effects of light pollution.”