It is widely believed that Earth's atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid increase in microorganisms capable of performing photosynthesis. Researchers ...

The sea mammals may actually be able to sense the amount of oxygen in their blood—something we humans can't do.

Ancient microbes illustrate a particular kind of respiration in which carbon dioxide and hydrogen are combined to form acetic ...

We all depend on oxygen to survive, but about 3 billion years ago ... the team reveals that we may have volcanoes to thank ...

photosynthesis - the process that makes the oxygen we breath. Researchers involving RPTU University Kaiserslautern-Landau, Southwestern Germany, are unraveling mysteries of a bygone era ...

When we breathe, air, made up mainly of nitrogen and oxygen, enters our body through the mouth and nose. It travels down the trachea – or windpipe – into one of two bronchi and into ...

Oxygen is essential for life and a reactive player in many chemical processes. Accordingly, methods that accurately measure ...

“Activity of microorganisms in the ocean played a central role in the evolution of atmospheric oxygen. However, we think this would not have immediately led to atmospheric oxygenation because the ...

we cannot ethically or morally support providing oxygen therapy to those who do not require it." Healthy individuals take in approximately 21% oxygen from the air they breathe, says Boyer.

This requires oxygen – (known as excess post-exercise oxygen consumption (EPOC)) - that needs to be ‘repaid’ after the exercise stops. This is why we keep on breathing deeply for a few ...

Take a deep breath. Do you ever think about the air ... played a central role in the evolution of atmospheric oxygen. However, we think this would not have immediately led to atmospheric ...