ancient, ancient tree, cave art, history, kauri tree, magnetic field, new discoveries

Ancient Tree Points to a Turning Point in Earth’s History 42,000 Years Ago

An ancient tree shows the temporary breakdown of Earth’s magnetic field 42,000 years ago that sparked major climate shifts that led to global environmental change and mass extinctions, a new international study co-led by UNSW Sydney and the South Australian Museum shows. This dramatic turning point in Earth’s history — laced with electrical storms, widespread ...

Troy Oakes

A brilliant green aurora.