Source material The Big Magnetic Shift
Science: https://www.science.org/doi/10.1126/science.abb8677
Live Science: https://www.livescience.com/wandering-aurora-laschamp-event
EOS: https://eos.org/opinions/changing-name-for-earths-changing-poles
NYT: https://www.nytimes.com/2021/02/18/science/laschamp-earth-magnetic-climate.html
(… and many more, ask if you like!)
Yuval Noah Harari: Sapiens: A Brief history of Humankind