'Forever Chemicals' Found in This Common Wearable Tech

The presence of per- and polyfluoroalkyl substances (PFAS) in many household products continues to worry scientists as they're discovered in more items used in our daily lives. A new study found PFAS—more widely known as "forever chemicals"—in a part of a common piece of wearable technology that everyone from athletes to grandparents often wear. 

The study, published Dec. 18 in the Environmental Science & Technology Letters journal, found that more expensive wristbands used in smartwatches...