placing a mask over his mouth and face. They decreased oxygen levels every 5 minutes. “It gets harder and harder to breathe,” Hamu said. He has climbed a few mountains, though, so the thin air ...

A pilot has revealed the important reason why passengers need to pull on their oxygen masks before putting them on in the ...

oxygen bars ... of 40% oxygen that is delivered through a mask worn over the face. Proponents of this oxygen "therapy" say it boosts energy levels, increases your endurance during exercise ...

Footage shows oxygen masks being deployed as the Airbus A318 encountered a technical issue shortly after the flight took off from Charles de Gaulle Airport in Paris at around 9.30pm on Friday.