You might think the more oxygen you breathe in the better. But too much oxygen can make you sick.
How ancient microbes survived in a world without oxygen has been a mystery. Scientists discovered a living microbial mat that uses arsenic instead of oxygen for photosynthesis and respiration.
A fetus needs oxygen long before its lungs work and it's exposed to the air. Some ingenious biochemistry explains how the mother's blood delivers it.
Have you ever felt a piercing pain in your head when you eat something cold?
In the most severe cases, COVID-19 patients need oxygen pumped directly into their airways, or even be hooked up to a machine that does the job of their heart and lungs.
New research suggests that Earth's oxygenation didn't require difficult and complex evolutionary leaps forward.
Oxygen is vital for life, so much so that cells can sense when there isn't enough and adapt almost instantly. So how do they do it? The winners of the 2019 Nobel Prize for Physiology figured it out.
If the Amazon rainforest functions as our planet's lungs, what do raging wildfires threaten? An atmospheric scientist explains why the fires, though devastating, won't suffocate life on Earth.
What exactly is inside those red fire extinguisher canisters, and does it work better than water?
A sigh is the brain's way of stopping the tiny sacks in your lung from collapsing.
Bushfires require three key ingredients to ignite: heat, fuel and oxygen.
Recent extreme rains and weather in the Midwest are causing a multitude of problems in the topsoil that much of the nation's food supply relies on.
Put simply, it's the outcome of a chemical reaction, which humans learned how to make some 400,000 years ago.
Even a small cloud can weigh as much as four tonnes – but gravity, chemistry and temperature keep them floating in the sky.
It is possible to split water into oxygen and hydrogen gas in zero gravity using sunlight, shows new study.
While acclimatising is more important, here's the training you should undertake to go mountain-climbing.
You can't know how altitude will affect you until you're up there. Here's why people have different reactions to less atmospheric oxygen.
The students of class 3F at Ferny Grove State School want to know how they get oxygen into the International Space Station.
It's like one great big distillery up there.
Health benefits of being close to nature are well established, but the rise of apartment living means we can't always be close to greenery.