So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that maintain life, said Donald Canfield, a geobiologist at the University of ...

Bacteria used oxygen far earlier than expected, reshaping views on early life, evolution, and photosynthesis origins.

Juice bars. Wine bars. Coffee bars. And now ... oxygen bars? Yep, popping up all over the U.S. (as well as in Canada and Japan, where the craze is thought to have begun because of the serious air ...

The seals’ ability to detect the amount of oxygen in their blood may help them make diving decisions and avoid drowning.

The lowest speed may provide even quieter operation but will not be as effective at cleaning the air. Overall score for the Brondell O2+ Revive is mainly how well the model removed dust and smoke ...

The change from shiny to dull is called tarnishing. close tarnishingThe reaction of a metal with oxygen with air in which the surface of the metal changes from shiny to dull.

The Missouri House passed a bill Monday that would establish a fund to pay for hyperbaric oxygen therapy for veterans with a ...