On Dec. 17, the National Centers for Environmental Information (NCEI) and the British Geological Survey (BGS) released an updated version of the World Magnetic Model, a prediction for how Earth's magnetic field will shift and change over the next five years.
The World Magnetic Model, which predicts the difference between magnetic north and true north at every point on Earth, plays an integral role in satellite and aircraft navigation and helps smartphone users orient themselves using services like Google Maps.
