Pulse oximeters use light to measure how much oxygen is in a person’s blood. For most people, a normal pulse oximeter reading is between 95% and 100%, researchers said in background notes. Readings ...

These underground rodents are the first mammals found to actively choose air with lower-than-normal oxygen levels. Their ...

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 ...

Climate change is extending far beyond the threat of melting polar ice caps -- it's putting a dangerous stranglehold on life in oceans, too. A new study published in the science journal Nature ...

At 5,100 meters above sea level, this settlement is the highest permanent place humans live on Earth. Oxygen levels are ...

Medical experts caution that exposure to extreme cold without proper clothing can have serious consequences. Inadequate ...

Research reveals when and why ancient tropical seas transitioned from oxygen oases to marine dead zones, providing clues to ...