Recordings of the magnetic field from 9,000 years ago teach us about the magnetic field today

Source: Science Daily

New research has uncovered findings regarding the magnetic field that prevailed in the Middle East between approximately 10,000 and 8,000 years ago. Researchers examined pottery and burnt flints from archaeological sites in Jordan, on which the magnetic field during that time period was recorded.

https://www.sciencedaily.com/releases/2021/08/210816161332.htm