Add Yahoo as a preferred source to see more of our stories on Google. An automated announcement told United passengers to put on oxygen masks during a Transatlantic flight. A passenger on the flight ...

Yes, we know that flying is typically considered the safest way to travel. This doesn't change the fact that we're hurtling along tens of thousands of feet in the air, in a vehicle that still seems ...

A new study suggests that face masks have a negligible negative effect on the levels of carbon dioxide and oxygen that a person breathes. All data and statistics are based on publicly available data ...