A new study suggests the extinction of Neanderthals nearly coincided with a shift in Earth's magnetic field that let more ...

When an electric current passes through a metal wire, a magnetic field forms around that wire (see diagram at right ... and generators to operate. In the Earth (see image below right), the ...

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

Scientists Baffled to Find Signs of Another Core Within Earth’s Inner Core, Say ‘We Have to Rewrite the Textbooks’ For ...

Such is the case with the Earth's magnetic field. Every so often, our planet's magnetic poles reverse polarity (see When Compasses Point South). Compass needles have always pointed north ...

Back in 1832, the celebrated British physicist, Michael Faraday, carried out a set of experiments designed to answer a tantalizing question: could electricity be generated by Earth's rotation through ...

From there, the other directions can be figured out. Without the Earth’s magnetic field, this useful phenomenon would not occur. Whilst the geographical and magnetic north poles aren’t always ...

Earth’s magnetic field is generated by a 2,000 km thick outer core of liquid iron and nickel that surrounds the planet’s solid inner core. The axis of the earth’s internal magnet shifts ...

The strength of Earth’s magnetic field dropped to just 10% of its current level, while the magnetic poles wandered far from their usual locations. For about 300 years, the magnetic fi ...