Wellness influencers tout the therapy's power for everything from rejuvenating skin and hair to boosting longevity. Devices sold for at-home use abound. We look at the evidence behind the hype.

Using red light therapy for weight loss is a growing trend. Discover the best RLT devices based on your needs in this simple ...

An international team of physicists has achieved a significant advance in laser science, demonstrating for the first time a ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. It’s becoming increasingly difficult to see stars in the ...

Researchers from the University of Twente and Harvard University have developed a new way to generate ultraviolet (UV) light ...

Two of the forefathers of quantum theory, Albert Einstein and Niels Bohr, had a famous argument over whether light is a wave ...

We are surrounded by waves. tiny vibrational waves transport sound to our ears. Light waves stimulate the retinas of our eyes. Electromagnetic waves bring radio, television and endless streaming ...

Light has an increasing number of applications in biology and medicine—it can be used to stimulate cell growth, manipulate ...

Humans are naturally afraid of the dark. We sometimes imagine monsters under the bed and walk faster down unlit streets at night. To conquer our fears, we may leave a night light on to scare away the ...

The irony at the core of this article is that I learned about the Light Phone III while scrolling endlessly through articles on my iPhone, something that the Light Phone III absolutely can't do. And ...

Light sensitivity in one eye could occur for many reasons, ranging from minor injuries, dry eye, and migraine to more serious conditions, such as multiple sclerosis. Light sensitivity, or photophobia, ...