During the darkest weeks of the year, most of us welcome well-lit streets and sidewalks. But too much artificial light, where ...

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 ...

“Blue wavelengths of light are damaging to many forms of life, and glare from unshielded light compromises road safety and infiltrates bedrooms, suppressing melatonin production, undermining sleep ...

The nonprofit behind it, which fights to keep artificial light from ruining the night, believes darkness can actually help ...

Spring migration can be a deadly journey for billions of birds as they travel north. Several cities in the Midwest create an especially deadly path for birds where light pollution and buildings ...

An ornithologist spent four decades tracking 40,000 bird deaths at a single building. His records paved the way to better scientific and public understanding. In 1978, David Willard was working at the ...

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 ...

Outdoor lighting for buildings, roads and advertising can help people see in the dark of night, but many astronomers are growing increasingly concerned that these lights could be blinding us to the ...

Light pollution is bad. Not only is it bad for astronomers—making it harder for them to see the night sky and study the stars—but now researchers believe there might be a connection between light ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Scientists researching the prevalence of Alzheimer’s disease ...