And on a related note: Magnetic north shifting by 30 miles a year, might signal pole reversal: The magnetic pole is moving faster than at any time in human history, causing major problems for navigation and migratory wildlife. More: http://bit.ly/2McMdDW  #science

And on a related note: Magnetic north shifting by 30 miles a year, might signal pole reversal: The magnetic pole is moving faster than at any time in human history, causing major problems for navigation and migratory wildlife. More: http://bit.ly/2McMdDW 

Source: Twitter VT Parks