Outdoor Light at Night, Air Pollution, and Risk of Cerebrovascular Disease: A Cohort Study in China. Stroke, 2024; 55 (4): 990 DOI: 10.1161/STROKEAHA.123.044904 ...

Now, we’ve also added blue light-emitting devices – smartphones, television screens, tablets – which have been linked to sleep problems. But outdoor light may matter for our health, too.

Many astronomers are growing increasingly concerned that these outdoor lighting from roads, buildings and elsewhere could ...

Outdoor lighting for buildings, roads and advertising can help people see in the dark of night, but many astronomers are ...

How light pollution affects the body Several mechanisms could explain artificial light’s impacts on health. At night, light can trigger insomnia, which is itself a risk for many illnesses.

Hotter stars radiate more blue light, so a star (or light) of 10,000 K appears very blue. Cooler stars radiate more red, so stars and lights of 3,000 K share a soft yellow color.

Scientists have shown that light pollution -- especially light in the blue spectrum -- can alter the behavior of fish after only a few nights, and have knock-on effects for their offspring.

The perils of light pollution go far beyond not being able to see as many stars. Too much brightness at night can harm people’s health, send migrating birds flying into buildings, disrupt food ...

Outdoor LED lighting projects can save energy, but they can also make light pollution worse. Late one evening in June of 2016, John Barentine stood alone at Mather Point, an iconic and rarely ...