Ancient eruptions may have triggered conditions for oxygen ‘whiffs’ in the atmosphere In a nutshell Massive volcanic events ...

It is widely believed that Earth's atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid ...

We all depend on oxygen to survive, but about 3 billion years ago, there was barely any oxygen at all. When was the last time ...

Scientists found that volcanic eruptions triggered short-lived oxygen spikes before Earth's air became breathable.

It is widely believed that Earth's atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid increase in microorganisms capable of performing photosynthesis. Researchers ...

Researchers from the University of Tokyo provide a mechanism to explain precursor oxygenation events “whiffs,” which may have ...

When we discuss climate change today, we are mostly concerned with how such change will impact our environment and our lives. We look to the past to help understand climate cycles and how our ...

The Archean Eon (4–2.5 million years ago) is the second of Earth’s four major geologic eons, a time when the planet was mostly covered by oceans extending far deeper than those found today.

“Activity of microorganisms in the ocean played a central role in the ... geological and chemical changes during the late Archean eon (3.0-2.5 billion years ago) of Earth’s geologic history.