The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

When will the pole shift happen? Researchers say it's definitely a matter of when and not if. The poles have shifted in the past and will likely do so again. When the pole shift occurs, it will happen ...

Earth’s magnetic field is often described as a steady shield, but the geological record tells a more restless story. Polarity ...

For the first time, researchers measured the magnetic pull inside a single bacterium, turning a biological mystery into hard ...