As someone who lives near the city, light pollution limits what I see when I look up at night. However, that doesn't mean I ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

You may have seen reports late last month about a new study showing how too much light at night is affecting birds — the latest sign of a problem that has implications for us, too. The study’s ...

Light pollution from human activity can threaten radio astronomy – and people's view of the night sky. Estellez/iStock via Getty Images Outdoor lighting for buildings, roads and advertising can help ...

Good sleep hygiene calls for, among other things, a cool, dark and relaxing environment. It turns out the dark part is key to helping prevent heart disease. People who are exposed to more artificial ...

When a 1994 earthquake knocked out power across Los Angeles, thousands of anxious residents called local emergency services to report a strange, silvery cloud stretching across the darkened sky. What ...

The glow of streetlights, phone screens, and bedroom televisions may be doing far more damage to human health than most ...

Peggy Singlemann visits astronomer Kelsey Johnson at UVA’s Morven Sustainability Lab to learn how light pollution impacts plants and wildlife. Featured on VHG episode 2507, September 2025. Virginia ...

BISMARCK — In the name of protecting migratory birds and the North Dakotans they fly over, some state lawmakers want to make the darkest spring nights darker. Other lawmakers, however, say state ...

Clouds drift past the many channels of the Palo Alto Baylands as the sun sets in this file photo. Photo by Veronica Weber. In an effort to be not only be politically correct but also environmentally ...

During today’s time of rising political tension, racial and gender equality disputes, and fears in the possibilities of artificial intelligence, I would like to call attention to an issue that gets ...