The Baltic Sea is one of the most enclosed seas on Earth, trapping pollution for generations. As oxygen levels collapsed, normal ecosystems died, but microbes adapted instead. Scientists discovered ...

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

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

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

When oxygen disappears, most fish suffocate. This one ferments its own metabolism and waits months for spring beneath frozen ...

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

To take a pulse oximetry reading, turn on the device, place it on your fingertip, sit still, and wait for a stable reading. Normal oxygen saturation levels range from 95% to 100%; levels below 92% may ...

Scientists sent hurricane-level floods into a Maryland forest to find out what extreme weather and sea-level rise mean for coastal woodlands Kristen Goodhue PNNL Earth scientist Peter Regier (left) ...

Researchers in the U.S. have found that exposure to low oxygen levels — known as hypoxia — early in life can cause pulmonary hypertension (PH) by permanently altering lung blood vessel development.