Thinking about the death of #darkness. Cities are harsh habitats, plagued by many types of pollution, but #lightpollution is one of the most insidious. Especially during migration seasons, light pollution kills #birds , but it also harms their insect food and messes with plant hormones. The pulse of light and #dark synchronizes our biological clocks and light #pollution confuses this #rhythm. Please, turn off your porch lights. Don’t illuminate empty rooms. Save $ and save the dark.