During a brief but dramatic chapter in Earth's history about 41,000 years ago, the planet’s magnetic field nearly collapsed.

The strength of the Earth’s magnetic field ranges between 25,000 and 65,000 nano-Tesla (nT) with values of 31-58,000 nT between the equator and 50 degrees latitude. The complexity of the ...

Earth’s magnetic field sustains life on our planet, protecting us from solar winds, radiation and extreme changes in temperature. But around 591 million years ago, it almost collapsed.

A study by geophysicists from UC Berkeley and their Italian and French colleagues has shed new light on Earth's last major magnetic reversal. Occurring 786,000 years ago, the flip happened ...

The researchers found that during the Laschamps excursion, Earth's magnetic field reduced in size to about 10% of its current strength. This allowed Earth's magnetic poles to droop down near the ...

This period, called the Laschamps excursion, lasted around 2,000 years. The strength of Earth’s magnetic field dropped to just 10% of its current level, while the magnetic poles wandered far ...