In defense of dark skies: How artificial lighting disrupts natural cycles
Dec 20, 2015 1:00 AM - Darkness is a tough sell, especially on the winter solstice, the longest night of the year. But a dark night sky is a good thing. Ask an owl, or a firefly, or a wise man following a star. What's so good about the dark? Natural darkness is just as important as natural light. Plants and animals evolved with light-dark cycles, and these cycles affect our health and well-being.