A composite image of Europe, Asia, North Africa, and the entire Arctic. Scientists rushed to update a model of Earth’s fluctuating magnetic field, needed to keep navigational systems functioning. Many wondered what’s happening inside the planet’s core. NASA/GSFC/Suomi NPP via The New York Times)

This North Pole is on the move

For the past 150 years, the pole has been sprinting away from Canada and toward Siberia