The appearance of oxygen in Earth's atmosphere was a turning point in the history of our planet, forever transforming the ...

Oxygen-producing cyanobacteria triggered ... Thus it's possible that the microbes carry out a "cryptic" sulfur cycle that we do not yet understand. These findings offer a new window into how life ...

When did the Earth reach oxygen levels sufficient to support animal life? Researchers have discovered that a rise in oxygen levels occurred in step with the evolution and expansion of complex, ...

For now, life is flourishing on our oxygen-rich planet, but Earth wasn't always that way – and scientists have predicted that, in the future, the atmosphere will revert back to one that's rich in ...

Deep-sea researchers have launched a groundbreaking project to investigate "dark oxygen"—a form of oxygen produced in total darkness on the ocean floor. The initiative follows last year's discovery of ...

This ultimately cuts off the possibility for photosynthesis to occur. Due to this sudden cutoff of oxygen production, levels rapidly plummet, and life as we know it comes to a dramatic end. According ...

The global ocean on Jupiter’s moon Europa contains about twice the liquid water of all the Earth’s oceans combined. New research suggests that there may be plenty of oxygen available in that ocean to ...

We think of oxygen as life, sustenance, a literal breath of fresh air. But it's actually a very reactive element. Anyone who's burned a log has witnessed this firsthand. So why do so many life-forms ...

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

Earth’s oxygen-rich atmosphere does more than provide the foundation for complex life. The oxygen in the atmosphere is so reactive that it readily combines with other chemical elements. Together, they ...

ANN ARBOR, Mich.—Data from the Cassini-Huygens satellite showing oxygen ions in the atmosphere around Saturn’s rings suggests once again that molecular oxygen alone isn’t a reliable indicator of ...