Two tiny ingredients in ancient seawater – nickel and urea – may explain why oxygen arrived late on Earth. A team in Japan tested this idea and found a chemical choke point that held back early oxygen ...

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

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 ...

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

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