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

Chronic wounds often spiral out of control because oxygen can’t reach the deepest layers of injured tissue. A new gel developed at UC Riverside delivers a continuous flow of oxygen right where it’s ...

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

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

Medically reviewed by Daniel More, MD Key Takeaways Oxygen therapy can help people with COPD breathe better and do daily activities with less difficulty.There are three types of oxygen therapy: ...

The most common indication for the administration of supplemental oxygen is acute or chronic hypoxemia. Causes include pulmonary infection, chronic obstructive pulmonary disease (COPD), congestive ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. “I basically told ...

Based in Tampa, Florida, Virginia Pelley is a former women's magazine editor who has written health and fitness content for Men's Journal, Cosmopolitan magazine, the Chicago Tribune, ...

Invasive mechanical ventilation in critically ill adults involves adjusting the fraction of inspired oxygen to maintain arterial oxygen saturation. The oxygen-saturation target that will optimize ...

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 ...