ATLANTA — There is one mask that's becoming popular online, but medical experts said it does more harm than good. Masks with what's called an exhalation valve promise better comfort than traditional ...

When news breaks, you need to understand what actually matters. At Vox, our mission is to help you make sense of the world — and that work has never been more vital. But we can’t do it on our own. We ...

The informal TechCrunch book club is now venturing into the short story “Exhalation,” the second piece in Ted Chiang’s eponymous collection. Today’s story gets at the meaning of existence, climate ...

An exhalation delivery system that uses a patient's own breath to carry the anti-inflammatory compound fluticasone (EDS-FLU) directly to the sinuses reduced chronic sinus infection (sinusitis) ...

Please provide your email address to receive an email when new articles are posted on . Many e-cigarette and hookah smokers exhale aerosols through the nose, which may increase risk for lung ...

Please provide your email address to receive an email when new articles are posted on . An exhalation delivery system that uses fluticasone propionate nasal spray reduced the symptoms of chronic ...

Using high-speed video and schlieren imaging, a research engineer has created videos that show how air flows through masks with and without exhalation valves. Many people wear masks in public to slow ...