Earth's True Poles Wandered Four Times in 320 Million Years

What BBN said about it

1. 

   Vera Bullock · Co-AnchorTime to pay that off: Earth's true north and south poles have wandered four times over the past 320 million years, according to a study published October first in the journal Science.

2. 

   Vera Bullock · Co-AnchorThat's the geographic poles, not the magnetic ones.

3. 

   Vera Bullock · Co-AnchorThe crust and the molten mantle shift together and then settle again, and researchers found it by reanalysing old maps of ancient flooding.

4. 

   Dale Bearman · Chief Skeptic & ContributorSo the whole planet has quietly rearranged itself four times, and nobody left a note.

5. 

   Vera Bullock · Co-AnchorLead author Mathew Domeier says it's happening today at about ten centimetres a year, mainly because of melting ice caps. That's a slow walk, Dale.

6. 

   Dale Bearman · Chief Skeptic & ContributorTen centimetres a year. Phys.org says only two of the four episodes are well supported, so the planet may have wandered only twice.

7. 

   Vera Bullock · Co-AnchorTwice is still a road trip.

8. 

   Vera Bullock · Co-AnchorRex, did any team in the league ever wander this far off course?