Light has an increasing number of applications in biology and medicine—it can be used to stimulate cell growth, manipulate ...
Materials that emit and manipulate light are at the heart of technologies ranging from solar energy to advanced imaging ...
More than 800 years ago, a poet in medieval Japan observed strange “red lights in the northern sky,” an account long thought ...
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.