Ancient microbes tied to our earliest ancestors could use oxygen, reshaping ideas about how complex life began on Earth.

Learn how oxygen’s early rise could have given complex life the energy boost it needed to evolve.

Life on Earth may have learned to breathe oxygen long before oxygen filled the skies. MIT researchers traced a key ...

Scientists have developed a powerful new dual-imaging tool that maps the retina’s structure and oxygen use in unprecedented detail. This breakthrough could one day help doctors spot sight-stealing ...

A nasal cannula is a medical device that provides supplemental oxygen therapy to people who have lower oxygen levels. There are two types of nasal cannulas: low flow and high flow. The device has two ...

O'Driscoll BR and Howard LS Davison AG; British Thoracic Society. Emergency oxygen use in adult patients: concise guidance. Clin Med 2011; 11: 372–375. 3. Martin DS and Grocott MP. Oxygen therapy in ...

Some of Earth’s earliest microbes evolved the ability to use oxygen hundreds of millions of years before it accumulated in ...

More than 1.5 million Americans use an oxygen concentrator for supplemental oxygen therapy. Oxygen concentrators can be rented or bought, depending on whether you are using it for short-term therapy ...

In past Medscape posts, I've railed against the cost of inappropriate prescriptions for oxygen. A recent review recommended against prescribing oxygen for patients with isolated exertional or ...