Credit: The City Dark

You might not notice light until it’s dark, but many are noticing the disappearance of the dark due to light. Filmmaker Ian Cheney features astrophotographic shots of the Earth lit up at night in The City Dark: A Search for Night on a Planet that Never Sleeps, which is currently screening around the country. He interviews scientists, philosophers, historians, and lighting designers to investigate the negative consequences of light abundance—one being the disorientation and death of hatching sea turtles due to Florida’s lights, shown. He also looks at the positives—namely crime deterrance. •