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To investigate what happened, ancient New Zealand kauri trees were analysed for the study.

Flippin’ heck! The Earth’s magnetic poles can swap places  Nearly 42,000 years ago, the Earth got flipped turned upside down. It caused total chaos. And it might happen again soon. Mirjam Guesgen explains. Seemingly randomly throughout time, the Earth’s magnetic poles flip – magnetic north swaps places with the magnetic south. Up until now, scientists weren’t really sure what that meant for the planet’s environment or climate, or thought it had little effect. But a paper published today in the journal Science turns that idea on its head too.  According to the study’s authors, ...

Friday, 19 February 2021, 8:29 am A new international study using ancient swamp kauri from Northland shows a temporary breakdown of Earth’s magnetic field 42,000 years ago sparked major climate shifts leading to global environmental change and mass extinctions. This dramatic turning point in Earth’s history was triggered by a reversal of Earth’s magnetic poles and changing solar winds. Study authors from UNSW Sydney, the South Australian Museum, NIWA and the University of Waikato, dubbed this episode the ‘Adams Transitional Geomagnetic Event’, or ‘Adams Event’ for short - a tri...

Ancient swamp kauri records reveal breakdown of Earth's magnetic field 42,000 years ago.