Every second breath a person takes depends on oxygen generated not by forests or grasslands, but by microscopic organisms ...

Microscopic ocean algae produce a huge share of Earth’s oxygen—but they need iron to do it. New field research shows that when iron is scarce, phytoplankton waste energy and photosynthesis falters.

We think of oxygen as life, sustenance, a literal breath of fresh air. But it's actually a very reactive element. Anyone who's burned a log has witnessed this firsthand. So why do so many life-forms ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why do humans and animals have to breathe? – ...

In Mona’s new permanent installation, visitors can breathe air so pure it ‘has not been touched by any being before you’ ...