Likewise, a wire passing through a magnetic field creates an electric current within the wire. This is the basic principle that allows electric motors and generators to operate. In the Earth (see ...

The Earth's magnetic field shields life from harmful solar and cosmic radiation. A weakening field could increase genetic mutations, potentially raising cancer rates. Additionally, a reversal ...

Would a dramatic change in the Earth's magnetic field affect creatures that rely on it during migration? Late on a January night in 1993 I found myself on a beach on the Pacific coast of Costa ...

Iron is magnetic so the liquid iron causes Earth to have a magnetic field. The needle of a compass is a small magnet that can turn. It turns around until its own magnetic field lines up with the ...

Geophysicist Daniel Lathrop wants, among other things, to use it to predict when the Earth’s magnetic field will next reverse. Over the course of our planet’s history, the field has flipped ...

While shifting is not a rare occurrence, the pole is moving both faster and differently than it was before, raising questions about the planet's magnetic field. If the Earth's field is disrupted ...

This, in turn, affects convection in the outer core—the dynamo-like process that generates the magnetic field that protects life on Earth from harmful cosmic rays. "Flow in the outer core drives ...

Then, in 1973, two geophysicists called Christopher Russell and Robert McPherron presented a theory involving the magnetic fields of the Earth and the Sun. Most of the time, the Earth and Sun’s ...

FROM a knowledge of the mass of the Earth and its moment of inertia and from an analysis of seismic data, Bullen 1 has reconstructed a pressure-density curve for the Earth's interior. The outer ...