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

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

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

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 ...

Welcome to the heart. The heart is a muscle which pumps blood non-stop through a huge network of blood vessels, delivering oxygen and nutrients to every part of the body. It has two sides ...

Whales transport vital nutrients from urine and carcasses across oceans – study - The findings show whales carry out the ...

Vascular dementia is the second most common form of dementia after Alzheimer's disease. It is caused by reduced blood flow to the brain, which starves brain cells of the oxygen and nutrients they need ...