Ancient trees show turning point in Earth history 42,000yr ago.
Why the open web links it
Ancient trees reveal a magnetic field reversal 42,000 years ago caused major climate shifts and extinctions.
Linked by 5 independent sites, 3 of them widely read in the 2026-10 crawl of the open web, including unsw.edu.au, bigthink.com, keele.ac.uk, ichthys-consulting.de, polarjournal.net.