Electricity can be generated from the energy of Earth rotating through its own magnetic field—according to a provocative claim put forward by physicists this week. The findings are controversial but ...

American researchers have measured a tiny electrical voltage by exploiting Earth's magnetic field in the planet's rotational motion. This discovery, though modest, revives a scientific debate nearly ...

The blobs lie at the base of Earth’s mantle, around 1,802 miles beneath Africa and the Pacific.