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Tag: Oxygen

Did plate tectonics set the stage for life on Earth?

The cooling of Earth’s mantle via plate tectonics increased the amount of phosphorus in the…

Scientists find widespread ocean anoxia as cause for past mass extinction

New research sheds light on first of five major mass extinctions,

Clues to recovery from mass extinction

About 252 million years ago, more than 90 percent of all animal life on Earth…

Photosynthesis originated a billion years earlier than we thought, study shows

Ancient microbes may have been producing oxygen through photosynthesis a billion years earlier than we…

Which came first: Complex life or high atmospheric oxygen?

Deep ocean basalts record 3.5-billion-year history of oceanic and atmospheric oxygen levels.

Astrobiology Top 10: How phosphorus helped oxygenate Earth’s atmosphere

The slow rate at which phosphorus was recycled in Earth’s ancient oceans could have stalled…

Astrobiology Top 10: Lack of Oxygen Not a Showstopper For Life

Microbes in hot springs capture energy with low-energy types of oxidants.

How phosphorus helped oxygenate Earth’s atmosphere

The slow rate at which phosphorus was recycled in Earth’s ancient oceans could have stalled…

A popular tool to trace Earth’s oxygen history can give false positives

For researchers pursuing the primordial history of oxygen in Earth's atmosphere, a new study might…

Oxygen-Deficient Dwarf Galaxy Hints at Makings of Early Universe

A recently discovered dwarf galaxy in the constellation Lynx may serve well as a proxy for…