Why is the magnetic North moving?

The newspaper Le Monde offers a popularization video (in french only) on the Earth’s magnetic poles, especially the magnetic North, which has been moving since the 19th century and is now approaching Siberia at a speed of 55 km per year.

The ISTerre Geodynamo team was called upon to produce this video, since it includes Henri-Claude Nataf, CNRS research director, and animations from the numerical simulations of the core carried out by Nathanaël Schaeffer, CNRS researcher.