Blood oxygen levels refer to the amount of oxygen circulating in the blood. Normal blood oxygen levels fall between 75 and 100 millimeters of mercury (mm Hg) on arterial blood gas (ABG) test results.

Discover how hyperbaric oxygen therapy may improve sleep quality, reduce inflammation, and support injury recovery. Read more ...

Scientists rethink why giant insects once ruled the skies, finding oxygen may not explain their size or disappearance.

It's no secret that Earth is doomed. Sure, there's the threat of climate change and the fact that sea levels are rising around the world. But that's not what we're talking about. Instead, our planet's ...

Makers of medical devices that quickly measure oxygen levels in the blood would have to gather extra data to show that their products work for patients of color, under a new federal proposal released ...

This story was originally published by Yale Environment 360 and is reproduced here as part of the Climate Desk collaboration. Off the coast of southeastern China, one particular fish species is ...