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.

Scientists experimentally confirmed what we’ve known to be true for half a century—darkness can “travel” faster than light.

(Aitor Diago/Moment/Getty Images) For the first time, physicists have observed that 'holes' in light can move faster than the light itself. They're known as phase singularities or optical vortices, ...

A light-sensitive crystal is opening the door to a new era of “light-written” technology. Arsenic trisulfide can be reshaped ...

Light pollution endangers the Atacama Desert's pristine night skies, crucial for global astronomical research and exploration ...

Scientists have unveiled a groundbreaking discovery: a material capable of bending light in unprecedented ways. This advancement opens up possibilities for innovations in optics, including superlenses ...

Red light therapy has become the latest ray of hope in the wellness industry. On social media, influencers claim it can deliver everything from younger-looking skin to more hair growth, better sleep ...

A small strip of rubbery material sits motionless on a lab bench at Lawrence Livermore National Laboratory. A researcher aims ...

Researchers in China published a paper describing a theoretical model for photonic computing that used light particles instead of electrons for faster processing. The team developed “parallel optical ...

Add Yahoo as a preferred source to see more of our stories on Google. Light-based technologies have wide practical applications. Wikimedia Commons, CC BY Light is all around us, essential for one of ...

Optical vortices—light beams carrying orbital angular momentum (OAM)—are characterized by helical wavefronts and phase singularities. While they have been widely studied in recent decades, two ...

Researchers have built a paper-thin chip that converts infrared light into visible light and directs it precisely, all without mechanical motion. The design overcomes a long-standing efficiency-versus ...