The Centers for Disease Control (CDC) updated its mask guidance last week, recommending people wear N95 or KN95 masks. “As we are entering year three of the pandemic, we’re getting more and more data ...

NBC Select independently determines what we cover and recommend. When you click on or buy through our links, we may earn a commission. Learn more. Fewer people wear face masks than during the Covid-19 ...

If you live in a city like Delhi, you know all too well how air pollution can turn stepping outside (or even keeping your windows open all day for ventilation) into a health hazard. That's why wearing ...

The air in Delhi has turned grey, heavy and hazardous once again. With the Air Quality Index (AQI) soaring past 400 and even entering the “hazardous” category in many zones, ordinary walks or commutes ...