In January 2024, I wrote a big piece on a relatively new, and very promising, approach to fighting respiratory diseases like Covid, tuberculosis, and flus. It’s called “far-UVC,” a type of ultraviolet ...

Ultraviolet (UVC) light disinfection dominated IAQ news the last two years, as it was widely used to effectively help combat the virus that causes COVID-19. As the pandemic wanes, building owners and ...

A bus being treated with ultraviolet light in Shanghai, China. Although types of UV light are already in use to decontaminate vehicles and indoor spaces, the wavelengths used are dangerous to people.