"3,000 years of secrets unlocked": this ancient tree exposes Earth's incredible magnetic field reversal history

"3,000 years of secrets unlocked": this ancient tree exposes Earth's incredible magnetic field reversal history

IN A NUTSHELL A perfectly preserved ancient tree revealed insights into a magnetic field reversal 42,000 years ago. The Laschamps Excursion caused dramatic environmental changes, including increased ultraviolet radiation. The event may have influenced early human behavior, leading to a rise in cave art and the use of red ochre as sunscreen. Current shifts in the Earth’s magnetic pole suggest the possibility of future geomagnetic events with sig…