Excessive artificial light at night (ALAN) harms ecosystems and human health. LED lights, while energy-efficient, often produce excessive blue light, worsening ALAN. Properly designed outdoor lighting ...

Light pollution is a man-made problem caused by the excessive use of artificial lights, especially at night. These lights can disrupt natural sleep cycles, waste energy, and even mislead migratory ...

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 ...

PALO ALTO, Calif. (KGO) -- The city of Palo Alto is considering new rules to cut out light pollution and they could go so far as a 10 p.m. curfew on all outdoor lights. Reportedly - 80% of Americans ...

For much of human history, the rhythms of daily life were dictated by the sun — when to wake, when to work and when to sleep. But that all changed in the 19th century with the advent of electric light ...

Earth's satellite problem is only getting worse as time goes on and more satellites are sent into orbit. One of the chief issues with the number of satellites in orbit is how much they can affect our ...

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A dozen Colorado state parks are aiming to tamp down light pollution and make it easier for stargazers to check out the night skies with support from a new dark sky program. The Colorado State Parks ...

Exposure to outdoor light at night could put people at a higher risk of developing Alzheimer’s disease (AD), according to a new study published in Frontiers in Neuroscience. "We show that, in the U.S.

Click to share on Facebook (Opens in new window) Click to share on Reddit (Opens in new window) Click to share on Twitter (Opens in new window) An bright streetlight casts a multidirectional glow over ...