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 ...

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 ...

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 ...

The mechanisms underlying two important phenomena in the Archean—the emergence of continental crust and the presence of an exceptionally strong geomagnetic field—remain poorly understood. Notably, ...

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 ...

Probing the depths beneath our feet is a daunting task. Scientists rely on indirect clues to understand the phenomena at work nearly 1,864 miles (3000 km) deep. It is precisely at this ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 99, No. 22 (Oct. 29, 2002), pp. 14020-14025 (6 pages) If relationships exist between the frequency of geomagnetic ...

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 ...

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 ...

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 ...

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 ...