Blue-light call boxes are scattered along the walkways of most universities in the United States. At Ohio State University, they may only make up a small percentage of total calls made to campus ...

When it comes to screen time before bed, some types of blue light coming from a laptop or smartphone might not damage the quality of your sleep as much as others. Several studies have found that ...

We've been using PCs and smartphones for years, and their LED, LCD, TFT, or other displays that emit blue light are known for harming the eyes after a long period of usage. Recently, health companies ...

Melanopsin responds most strongly to light around 480 nanometers, the same short-wavelength range that LED screens and bulbs ...

It’s one of the most pervasive messages about technology and sleep. We’re told bright, blue light from screens prevents us falling asleep easily. We’re told to avoid scrolling on our phones before ...