A tree-ringed African lake has yielded a record of Earth's magnetic field spanning the past 150,000 years. A core of rock and ...

potentially influencing human evolution at a pivotal moment in our history. During the Laschamps excursion, Earth’s magnetic field weakened to just 10% of its current strength, while the ...

Earth's magnetic field was so weak it almost disappeared. Then, seemingly out of nowhere, complex life emerged.

But Gallet, of France’s Institut de Physique du Globe de Paris, had his face turned toward the rocks with one goal in mind: deciphering the history of Earth’s magnetic field. This protective ...

If you ever travel back in time to hang out with Homo sapiens around 41,000 years ago, pack some sunscreen – or better yet, a ...

Earth's magnetic field — also known as the geomagnetic ... The Carrington Event: History's greatest solar storm Geographic North and South poles are where lines of longitude converge according ...

Antarctic ice offers a third way of resolving the history of Earth’s magnetic field, since it contains samples of a beryllium isotope that forms when cosmic radiation strongly interacts with the ...

Earth’s magnetic field then left its mark as those minerals ... and for short periods was double today’s strength. As to Lachish, history did not forget it. Sennacherib celebrated victory ...

"We need a way to date these sediments." That's where the variations in Earth's magnetic field come in. When rocks form, they lock in a record of the magnetic field via small magnetic crystals ...