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 ...

“By detecting these strong formations of carbon dioxide, we have shown that there is a considerable fraction of heavier elements, such as carbon, oxygen, and iron, in the atmospheres of these ...

To mitigate global climate change, emissions of the primary culprit, carbon dioxide, must be drastically reduced. A newly developed process helps solve this problem: CO 2 is directly split ...