High in the eastern Andes, close to the limits of human tolerance, sits La Rinconada, a gold mining town unlike any other. At ...

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

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

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

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxemia) give ...

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxaemia) give ...

Long before dinosaurs, Earth’s forests were ruled by a many-legged giant. Here’s why this millipede’s size still challenges ...

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 ...

New research shows ancient tropical oceans once held more oxygen than cooler regions, reshaping where early life could ...

Thick, swirling clouds cover Jupiter from pole to pole. They hold water like Earth’s clouds, but at far greater density.

What could happen if oxygen levels doubled in Earth’s atmosphere.

The light-sensitive tissue of birds’ eyes is not supplied with oxygen by blood vessels – instead, it powers itself with a ...