Breathing polluted air in Indian cities is a serious concern. Choosing the right mask is crucial for protection. N95, KN95, ...

So, about masks -- they do next to nothing if you don't wear them properly. Yep, even the cloth coverings touted as the best thing since social distancing have instructions. We've laid them out below, ...

With levels of sooty air pollution far too high across swaths of the Los Angeles area, Dana Benton is sleeping with a mask on, even with her air purifier running. “My car was just covered in ash, and ...