You should know the safety spiel well by now – “In the event of emergency, put your oxygen mask on first.” But have you ever wondered why the cabin crew is so careful to hammer this information into ...

With U.S. Covid-19 cases at very high levels and new vaccines still several weeks away, we asked experts for their advice on when and where to wear a mask. By Ceylan Yeğinsu and Dani Blum It is the ...

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 ... comfortable as masks need to be worn for long periods. Inspection ...

Use N95, or better, masks and make sure they cover your nose and mouth. By Claire Moses Today’s the day to put that mask back on. As smoke from wildfires in Canada drifts over large parts of the ...