The invisible light can kill viruses and pathogens like the one that causes COVID-19, but experts are raising alarms about the potential safety risks. Originally hailing from Troy, Ohio, Ry Crist is a ...

PITTSBURGH — The coronavirus pandemic has created a demand for cleaning wipes, sprays and even ultraviolet-C or UV-C devices. UV-C technology has been used as a cleaning tool in hospitals for years.

LED or Light-emitting diode bulbs are household things these days. These have become the dominant technology for lighting thanks to their energy efficiency and long life values. There’s no doubt that ...