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.

This version will remain valid until late 2029, during which time we can expect to see the magnetic north pole slowly edge further ... here Unfortunately, marine animals often run into issues ...

The single-housed subject wears a permanent collar and is caught with a pole, using the squeeze-back to control his/her position. A trained animal allows itself to be caught with little resistance.