What would life look like if the electromagnetic technology of the entire earth was suddenly wiped out? We're talking about no cell phones, no Internet, and maybe not even basic electricity. This isn’t science fiction: the Earth’s magnetic poles are primed for a switch. Here to explain is Alanna Mitchell, an acclaimed science journalist and author of the brand new book "THE SPINNING MAGNET: The Electromagnetic Force that Created the Modern World—and Could Destroy It."

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