Earth’s north magnetic pole is moving, researchers say. It has moved so much, so quickly that a group of scientists hurried to change a model that helps guide ships, airplanes and submarines in the Arctic Ocean. Last week, the scientists released new information on the north magnetic pole sooner than they had planned. Compass needles point toward the pole. As a child, you might have received a simple compass as a gift. It has a magnetized pointer which shows the direction of magnetic north. Liquid metal at the center of our planet produces the magnetic field. Unpredictable movements in the liquid mean the field and the location of magnetic north are always changing. The World Magnetic Model records those changes. The model is a joint product of the British Geological Survey and the United States National Oceanic and Atmospheric Administration. The two agencies were planning to report changes in the magnetic north pole, as they do every five years, at the end of 2019. But the pole has moved so quickly they had to release the information much sooner.