[This is a transcript of the video embedded below. Some of the explanations may not make sense without the animations in the video.] For much of human history, light meant safety. Electric lights are today one of the hallmarks of civilization. But in recent years, activists have begun to complain about "light pollution" caused by too much or the wrong type of artificial light. In the French city of Rennes some…

Light pollution is disrupting the seasonal rhythms of plants and trees, lengthening pollen season in U.S. cities.

When you look up at the night sky, can you see the stars? If you live in a large city or near one, the answer is probably no. The culprit is not just clouds and weather — it's light pollution.

For nearly all of human history, once the Sun went down and the sky darkened, so long as you had a clear, moonless night, you'd be greeting with a spectacular, thrilling night sky: with thousands of…

European Southern Observatory Director General Xavier Barcons told Space.com that astronomers expect the project to brighten the sky by up to 10 percent around the observatory. Such...

Light pollution is an issue for astronomers, but you can limit your contribution – and find a dark spot near you, says Abigail Beall

A new study's finding that urban light pollution may disrupt the winter dormancy period for mosquitoes that transmit West Nile virus could be considered both good news and bad news.

A new national study showed the association between AD risk and nighttime light pollution was seen across subgroups, with younger people particularly vulnerable.

Every creature lives within its own sensory bubble, but only humans have the capacity to appreciate the experiences of other species. What we've learned is astounding.

Astronomers on Monday warned that the light pollution created by the soaring number of satellites orbiting Earth poses an "unprecedented global threat to nature."

Millions of Americans live in cities that produce light pollution, making it difficult to see stars in the night sky. Some scientists and cities are pushing to find ways to reduce the problem. Joy Benedict reports.

As the old saying goes, many hands can make light work. They can also work together to make light vanish.

Concern over global light pollution is growing. Astronomers are noticing its growing effect on astronomical observations, just as predicted in prior decades. Our artificial light, much of which is not strictly necessary, is interfering with our science.

Astronomers on Monday warned that the light pollution created by the soaring number of satellites orbiting Earth poses an "unprecedented global threat to nature."The number of satellites in low Earth orbit have more than doubled since 2019, when US company SpaceX launched the first "mega-constellati...

Concerned about light pollution? Here are steps you can take to preserve dark skies.

How artificial light pollution is keeping the true night sky in the dark.

Light pollution is an existential threat that belongs in the same conversation as climate change, experts say

The night sky is growing brighter at an alarming pace, according to new research. LED lighting has created new problems for efforts to track and reduce light pollution.

Light pollution has raised concerns about its ecological effects on people and animals

A new study showed fish exposed to light pollution at night exhibited anxiety-like behavior, and the lighting even affected the next generation of fish. The post Light pollution affects fish even into the next generation first appeared on EarthSky.