How a small device called a pulse oximeter measures blood oxygen levels

A pulse oximeter is a device that clips on your finger, toe, or earlobe to measure blood oxygen saturation. Here's how it ...

Oxford scientists develop 5-minute COVID-19 antigen test

Scientists from Britain's University of Oxford have developed a rapid COVID-19 test able to identify the coronavirus in less than five minutes, researchers said on Thursday, adding it could be used in ...

Breathing with face mask does not alter oxygen level; virus can last 9 hours on skin

The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the virus.

New method may detect infectious tuberculosis in the air

Researchers at Karolinska Institutet, in collaboration with colleagues in South Africa, have investigated whether ...
Nature

First proposed blood test for chronic fatigue syndrome: what scientists think

A blood test has achieved 96% accuracy in diagnosing the condition in a small study of individuals. What does the test detect ...
Earth.com

Oxygen's dark side: How O2 flips personalities, linking life and energy

New research reveals when oxygen flips from stable to reactive, "singlet" form connecting the chemistry of life with ...
Nanowerk

Engineered carbon dots support maize growth under salt stress

Dual emission carbon dots strengthen maize photosynthesis and stress tolerance by converting light more efficiently and ...