Pole dancing: Earth’s magnetic north is racing towards Siberia at fastest pace in 400 years, perplexing scientists Kit Daniels Posted on December 19, 2019 Posted in Aggregated No Comments The last reversal occurred some 770,000 years ago – and took 22,000 years to complete! Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email