For the past 160 years, it’s been weakening at an alarming rate. Scientists are concerned that one day, our magnetic poles could flip like they did 780-thousand years ago.

From CBC…

http://www.cbc.ca/radio/quirks/march-17-2018-remembering-stephen-hawking-disturbance-in-earth-s-magnetic-field-and-more-1.4575653/something-unusual-is-happening-with-our-planet-s-magnetic-field-1.4579903

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