Earth’s most recent magnetic pole reversal, called the Laschamp event, has been dated to 42,000 years ago and coincides with extreme weather and the extinction of large mammals
— Read on www.newscientist.com/article/2268520-earths-magnetic-field-flipping-linked-to-extinctions-42000-years-ago/

Earth’s magnetic field flipping linked to extinctions 42,000 years ago

Karina Shah

Environment 18 February 2021