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 ...

Learn more about how complex life on Earth likely wouldn’t have been possible without volcanic activity.

Discover the connection between volcanic events and the rise of Earth's oxygen levels that enabled complex life to thrive.

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