Scientists studying Earth's magnetic field have discovered that its electric heartbeat flows in the opposite direction from ...

The rotation of the Earth's inner core may be reversing, scientists have found in a study that sheds new light on geological processes occurring deep within our planet. The results of the research, ...

Compasses show the direction of the magnetic field around a current in a wire. Iron filings align with the field lines. Place wire and compasses, if desired, under document camera or on projector. If ...

Traditionally, scientists believed that the charge polarity of the magnetosphere at the equator and the poles was the same, but new satellite data shows otherwise.