Learn how some of Earth’s magnetic field flips last longer than others, weakening our defenses against cosmic radiation.

Researchers have identified a period of sluggish magnetic field flipping for planet Earth, some 40 million years ago – ...

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

Add Yahoo as a preferred source to see more of our stories on Google. The Earth's magnetic field deflects particles emitted by the Sun. Mark Garlick/Science Photo Library via Getty Images The Earth’s ...

Roughly 42,000 years ago, Earth’s magnetic field weakened dramatically during the Laschamps geomagnetic excursion, allowing more cosmic radiation to reach the atmosphere. In a peer‑reviewed study of ...

Protective force fields exist and you’re already living inside one. About 1,800 miles beneath the ground you’ll reach the border of Earth’s outer core, a subterranean ocean of liquid iron and nickel 1 ...

Deep beneath the ocean floor, ancient sediments hint that Earth’s magnetic field sometimes changed far more slowly than expected.

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Without its magnetic field, life on Earth would not be possible ...

India's Aditya-L1 mission has uncovered why Earth's magnetic field behaved strangely during recent solar storms. A new study explains how polar electric currents reached the equator.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Earth’s magnetic ...

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