When you flip a switch or power up your smartphone, the last thing on your mind is whether that light could be messing with ...

One of the most fascinating aspects of many technologies is the way they transform the world in ways completely unanticipated by their developers. The Internet, for example, was originally conceived ...

The blue light in LED lighting that is increasingly used in our homes can damage the eye’s retina while disturbing our biological and sleep rhythms, a French health authority warned in a new report.