A number of hypotheses have been used to explain how free oxygen first accumulated in Earth’s atmosphere some 2.4 billion years ago, but a full understanding has proven elusive. Now a new model offers ...

Researchers headed by a team at Massachusetts General Hospital have, for the first time, shown that reduced oxygen intake, or “oxygen restriction,” is associated with longer lifespan, and reduced ...

Michigan Tech researchers have developed a singlet oxygen model to calculate how particular chemicals break down in surface water. In addition to providing vitamin D, helping flowers grow and creating ...

Researchers showed that abound 2.5 billion years ago, the composition of Earth's continental crust changed fundamentally. (Reuters) The rise of oxygen in the Earth’s air was a consequence of the ...

A model is developed that simulates dissolved oxygen values at bi-weekly intervals for 38 samplings locations in a river system. The model is subsequently used to test and, in turn, to seriously ...

RIVERSIDE, Calif. — A research team of biogeochemists at the University of California, Riverside has provided a new view on the relationship between the earliest accumulation of oxygen in the ...

A new model offers plausible scenarios for how oxygen came to dominate Earth's atmosphere 2.4 billion years ago, and why it took at least 300 million years after bacterial photosynthesis started ...