Oxygen fills the air today, but for most of Earth’s early history it barely existed. Scientists say the atmosphere did not hold steady oxygen until about 2.33 billion years ago, during the Great ...

Oxygen is everywhere on Earth today. But that hasn’t always been the case. Scientists think oxygen only became a lasting part ...

Of 3 recommendations provided for home oxygen use in patients with COPD, a strong recommendation was made for providing at least 15 hours per day of long-term oxygen therapy (LTOT) in those with ...

An MIT study suggests some early life forms may have evolved the ability to use oxygen hundreds of millions of years before ...

In 2026, VARON continues to focus on clarity, reliability, and long-term user support. By offering a clearly structured lineup--from high-performance portable devices to clinical-grade home ...

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 ...

Oxygen therapy helps people with emphysema breathe more easily. In the later stages of the illness, oxygen may also extend someone’s life. Emphysema is a type of chronic obstructive pulmonary disease ...

While oxygen therapy is effective for cluster headaches, its effectiveness for migraine is still uncertain and requires further research. Some studies suggest oxygen therapy may reduce migraine ...