Last year, the National Sleep Foundation concluded that there wasn’t enough evidence to demonstrate that blue light exposure ...

Scary movies or stressful shows before bed could leave your brain on high alert, making it harder to fall asleep.

E veryone talks about how exposing yourself to blue light is damaging to your sleep, but one common habit might be even worse ...

Blue light is a buzzy idea right now. There are glasses to shield your eyes from it, and you’re constantly told to power down your digital devices before bed so that their blue light doesn’t ...

Many blue light glasses you can buy also claim to help reduce eye strain. Most are meant to be worn during the day while working in front of a computer, and at night to prevent the blue light from ...

This light doesn’t necessarily appear blue; it’s part of any bright white light, says Charles Czeisler, MD, chief of the Division of Sleep and Circadian Disorders at Brigham and Women’s ...

Peepers' blue light glasses are our pick for the best budget blue-light-blocking glasses. They're affordable (under $30) and with magnification, they can double as reading glasses.

The blue lights let an officer watch an intersection from a safe location, and still see if a driver ran the red. Pima County says it has been using the system for about 20 years.

Blue has the advantage at night of standing out better among a variety of red-light sources, notably vehicle brake lights. However, during nighttime conditions of smoke, fog, or haze, blue loses ...