Featured in oxygen
Ancient rocks hold the story of Earth’s first breath of oxygen
The Great Oxygenation Event may have happened all at once, around 2.3 billion years ago.
Lakes around the world are losing oxygen
The oxygen levels declined at rates much faster than in oceans.
American and British scientists split the Nobel Prize for work on how cells handle hypoxia
The work is now considered a basic aspect of how cells function.
Fires in the Amazon have given us a lot to worry about, but the Earth’s oxygen supply isn’t one of them
Here's where our O2 really comes from.
Why do people faint?
It's physical, but it's psychological, too.
Plastic chemicals could harm the ocean bacteria that produce 10 percent of our oxygen
Leachates are toxic to the most numerous photosynthesizing organisms in the world.
Oxygen might not lead us to aliens after all
A new study shows us why we may want to rethink how we search for extraterrestrial life.
Turning water into oxygen in zero gravity could mean easier trips to Mars
A real breath of fresh air.
The world’s best freedivers seem to have evolved super-sized spleens
If you want to be a successful freediver, work out your spleen.
Fish might be shrinking
And climate change is to blame.