Oxygen may have been present in Earth's ancient oceans, hundreds of millions of years before it began to mingle with the atmosphere. MIT researchers say it's possible that oxygen was present in so ...

Ancient Earth Had More Oxygen Than Previously Thought ... “There was a lot of debate as to what the oxygen content was 800 million or more years ago,” said Professor of Earth Sciences Nigel ...

NSF-funded project to solve enigma of Earth’s Great Oxidation Event (GOE) The rise of oxygen (O2) to levels capable of supporting complex life here on Earth remains one of science’s biggest ...

Ancient rocks hold the story of Earth’s first breath of oxygen The Great Oxygenation Event may have happened all at once, around 2.3 billion years ago. By Rahul Rao ...

Widespread, persistent oxygen-poor conditions in Earth's ancient oceans impacted early evolution of animals. ScienceDaily . Retrieved June 3, 2025 from www.sciencedaily.com / releases / 2011 / 01 ...

Ancient air pockets changing the history of Earth’s oxygen. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2016 / 08 / 160822174234.htm ...

TOKYO — For nearly 90% of Earth’s history, our planet’s atmosphere contained almost no oxygen, making it completely uninhabitable for humans and most modern life forms. Then, around 2.5 ...

“We find that both exhibit strong linearly increasing trends, coupled with a large surge in magnitude between 330 and 220 million years ago,” the authors wrote. “Our findings suggest unexpected strong ...

But researchers’ knowledge of Earth’s rotation rate and oxygen abundances that far in the past is also quite fuzzy and circumstantial. “It’s a long time ago,” Klatt says.

The oldest space dust yet found on Earth suggests that the ancient atmosphere of Earth had significantly more oxygen than previously thought, a new study finds. Although oxygen gas currently makes ...