ANCIENT TREE WITH RECORD OF EARTH'S MAGNETIC FIELD REVERSAL

https://www.newsweek.com/ancient-tree-discovered-earths-magnetic-field-1447570?fbclid=IwAR0Yc4P5biB2QlKskCfdf7MHpos8FH1b8b7rCn9x8B8jFwcNXwUzySVfsUc