Oxygen began entering Earth's oceans around 2.32 billion years ago, and shallow seas followed within a few million years.

Oxygen bars can be found in malls, casinos, and nightclubs. These “bars” serve purified oxygen, often infused with scents. The oxygen is administered into your nostrils through a tube. The purified ...

Nearly 4,000 m beneath the Pacific, in water so dark that sunlight has never penetrated, scientists have stumbled on a new way that oxygen can appear where it should not exist. The finding, quickly ...

Monitoring your oxygen level with a pulse oximeter if you have COVID-19 can help determine if it falls too low. Low levels may need medical attention. COVID-19 is a respiratory infection. It can cause ...

Oxygen therapy can help people with certain health conditions, such as emphysema, sleep apnea, or severe COVID-19, get enough oxygen to stay well and function. Oxygen therapy may be a temporary ...

Don't let failing oxygen sensors compromise your engine's performance. O2 sensors are critical to emissions control on your car, SUV or truck. As the name implies, the O2 sensor (also called an ...

Sandra Gordon is a journalist specializing in health and medicine for consumers and healthcare providers. Her work has appeared in major magazines and websites, including Prevention, Parents, Medical ...

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 ...

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 ...