The magnetic north pole is different from the geographic North Pole. The geographic North Pole (or “true north”) is where Earth’s axis meets its surface and is a fixed point on the globe.

As the time line at right shows, hundreds of times in our planet's history the polarity of the magnetic shield ensheathing the globe has gone from "normal," our current orientation to the north ...

Some animals that migrate across the globe -- such as birds, salmon, lobsters and sea turtles -- are known to navigate using the magnetic field lines that stretch from Earth's north to south pole.

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 ...

PARIS — Dancing turtles have proved for the first time that some animals use Earth's magnetic field to create a personal map ...