Light pollution, or photo pollution, is the presence of excess artificial light and is the result of urbanization and industrialization. It is only one of the many forms of pollution on Earth, ...

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 ...

The impacts extend far beyond those of us who treasure the night sky. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers are once again ...

Artificial light pollution from Earth is contaminating the skies over most major astronomical observatories, requiring immediate action to remedy, a team of international scientists has determined.