The planet's magnetic north pole is migrating. Since the mid-1990s, it's wobbled away from the Canadian Arctic and toward Siberia — which can have an effect on everything from shipping routes to the GPS in your phone.
Why does the core drift in the first place? Why is it moving at a faster rate today than it has in the past? And what happens if it keeps moving?
Guest host Tiffany Hanssen spoke to a scientist who's helping to draw up new geomagnetic maps, five years ahead of schedule.
Brian Meyer— Geomagnetic data manager at NOAA National Centers for Environmental Information
To listen to the full conversation you can use the audio player above.