Oxygen is everywhere on Earth today. But that hasn’t always been the case. Scientists think oxygen only became a lasting part ...

Oxygen fills the air today, but for most of Earth’s early history it barely existed. Scientists say the atmosphere did not hold steady oxygen until about 2.33 billion years ago, during the Great ...

Oxygen is a vital and constant presence on Earth today. But that hasn't always been the case. It wasn't until around 2.3 ...

Most living things, including humans, rely on oxygen to survive. However, some bacteria have a completely different way of making energy. Instead of breathing oxygen, they breathe electricity.

The Artemis Moon exploration program is designed not only to support a human return to our planet's natural satellite, but also open the doors to a more constant presence there. That's why this effort ...

Oxygen therapy can help treat cluster headaches. However, current research does not support its use for migraine and other headache types. Oxygen therapy involves breathing in air that contains 100% ...