Magnetic north is not where it used to be.
Since 2015, the place to which a compass points has been sprinting toward Siberia at a pace of more than 30 miles (48 kilometres) a year. And this week, after a delay caused by the month-long partial government shutdown in the United States, humans have finally caught up.
Scientists on Monday released an emergency update to the World Magnetic Model, which cellphone GPS systems and military navigators use to orient themselves.
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