We continue the series with an editor who helped shape careers for decades, Craig Horan.

If you've ever seen someone wearing a Stormtrooper-looking facial device for the sake of skincare, you're probably familiar with light-emitting diode (LED) masks. These machines aren't cheap—they can ...

Add Yahoo as a preferred source to see more of our stories on Google. LED light bulbs in a variety of color temperatures are displayed at a store in New Hampshire. (Charles Krupa / Associated Press) ...

LED masks have grown from an in-clinic staple to an at-home investment in recent years, luring plenty of topical skincare brands into the tech realm. Dr. Dennis Gross’ Spectralite has been seen on the ...

To the editor: For decades, millions of people in the greater Los Angeles area grew to like the orange light from the sodium streetlamps. Astronomers fitted their telescopes with sodium eyepiece ...