Earth’s magnetic field has long been framed as a planetary force field, a protective bubble that keeps the worst of the Sun’s radiation at bay. Increasingly, though, scientists are finding that this ...

Add Yahoo as a preferred source to see more of our stories on Google. A wild idea has been proposed to generate electric power from Earth’s rotation with the help of magnetic fields. A new research ...

Earth’s magnetic field feels permanent, but science tells a far more fragile story. Long before modern life emerged, the invisible shield protecting the planet from solar radiation weakened to a ...

Four-and-a-half billion years ago, Earth’s surface was a menacing, hot mess. Long before the emergence of life, temperatures were scorching, and the air was toxic. Plus, as a mere toddler, the Sun ...

Scientists combined two huge geological records. One tracks the virtual geomagnetic axial dipole moment, a measure of how strong the global magnetic field has been at different times. The other ...