Is Earth’s Magnetic Field Reversing? – Video

“There is no evidence of increased extinction rates associated with any of the past reversals,” the announcer for PBS Space Time video assures us.
Really!??

Oh, “there may be higher incidences of cancers and other mutations from more high-energy particles reaching the ground,” he continues. “And probably we’ll need to get much better at shielding satellites from the solar wind.”

Higher incidences of cancer and other mutations, but no evidence of increased extinction rates?  

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