Your navigation system just got a critical update, one that happens periodically because Earth’s magnetic north pole keeps moving. Here’s what to know.

Besides the geographic North Pole — an area that some children worldwide recognize as the home of Santa and all his reindeer — the Earth also ... gets a jolt, moving into a new position.

Now, scientists say we may finally understand why it’s moving. A new study published in the journal ... by the movement of molten material in Earth’s interior. This, they say, has caused ...

Check your compass again — Earth’s north ... The magnetic field is moving and flowing differently in the Northern Hemisphere than the Southern Hemisphere “for reasons we’re not sure ...