Science
The permanent oxygenation in our atmosphere occurred much later than previously thought – Tech Explorist
The permanent rise of oxygen in our atmosphere, which set the stage for life as we know it, happened 100 million years later than previously thought.

The rise of atmospheric oxygen fundamentally changed the chemistry of surficial environments and the nature of Earth’s habitability.
Previously it was believed that atmospheric oxygen significantly raised about 2.43 billion years ago. A new study suggests that great oxidation episodes started 100 million years later than previously thought.
For this study, an international research team, including UC Riverside scientists, analyzed rocks from South Africa formed during this event. The observations…
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