Tag: Magnetic Poles

Posted by Kelly Whitt in Earth | Human World | February 20, 2021 A magnetic reversal 42,000 years ago helped bring about earthly extinctions, scientists said, accompanied by changes in the sky including electrical storms and widespread auroras. A new international study suggests that a magnetic field reversal – combined with changing solar winds –…

An ancient, well-preserved tree that was alive the last time the Earth’s magnetic poles flipped has helped scientists pin down more precise timing of that event, which occurred about 42,000 years ago. This new information has led them to link the flipping of the poles to key moments in the prehistoric record, like the sudden…