Oxygen, the molecule that supports intelligent life as we know it, is largely made by plants. Whether underwater or on land, ...

About half the oxygen we breathe comes from the ocean. But, before this discovery, it was understood that it was made by marine plants photosynthesising - something that requires sunlight.

The air - it’s not something we think ... About 21% is oxygen, O2, and that’s the stuff we need to breathe in. That leaves approximately 1%, which is made up of atoms of unreactive argon ...

Sweetman first made the unexpected observation ... From that data, he planned to calculate something called “sediment community oxygen consumption,” which provides important information ...

That is because about 60 per cent of our body consists of water (H2O), which is made of oxygen and hydrogen atoms. Why do we dream? The science of sleep and what happens when we don’t get enough ...