Have you ever heard of the geodynamo? Perhaps not, but its presence has certainly had a huge impact on your life. The theory describes how Earth's magnetic field is generated and maintained by ...

Gleaning data from old rocks may result in bias. Now, geophysicists have a way to improve their methods to overcome challenges in studying the history of the Earth's core and magnetic field that make ...

Sustaining a magnetic field is difficult for a terrestrial planet. Creeping flow of the planet's rocky shell (mantle) restricts heat loss from the underlying core. By comparison, the liquid-iron core ...

The Earth's magnetic field is generated by the complex interplay of convective flows in its liquid outer core, a process commonly referred to as the geodynamo. The dynamics of this magnetic field are ...

During mantle overturn, large-scale plumes rise toward the surface, contributing to the formation of the Archean continents. Simultaneously, the temperature at the core-mantle boundary rapidly ...

Ancient dynamo Earth's magnetic field is 800 million years older than previously thought, new research suggests. A new analysis of Western Australian zircon minerals has found the engine that ...

Physicists in France have linked subtle variations in the length of day with conditions in the Earth’s core – where the Earth’s magnetic field originates. The finding could improve our poor ...

Scientists have produced a new estimate of just how old the Earth's core is. And it is relatively young, the researchers suggest, with the new study coming in at the bottom of recent estimates. The ...

Knowing when the geodynamo started is important for understanding the evolution of the core, the atmosphere, and life on Earth. We report full-vector paleointensity measurements of Archean to Hadean ...

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the ...

Many physical features of Neanderthals might not be for cold climate adaptation as previously thought. They may be for types of locomotion. Which, according to paleo-ecologist, John Stewart at ...

Bias introduced through analyzing the magnetism of old rocks may not be giving geophysicists an accurate idea of how Earth's magnetic dynamo has functioned. A team has shown there is a way to improve ...