How come all those living in National Geographic series BELOW ZERO, all say that there is dramatic weather shifts?

They all admit that bizarre weather shifts are making them drastically change the way the survive because of wild life grazing pattern shifting, our outright populations decreasing? GOING TO TELL ME MAN DOESN'T HAVE ANYTHING TO DO WITH THIS, CITE YOUR SCIENTIFIC EVIDENCE TO SAY THERE IS NO MAN MADE ELEMENT TO THIS. show more They all admit that bizarre weather shifts are making them drastically change the way the survive because of wild life grazing pattern shifting, our outright populations decreasing? GOING TO TELL ME MAN DOESN'T HAVE ANYTHING TO DO WITH THIS, CITE YOUR SCIENTIFIC EVIDENCE TO SAY THERE IS NO MAN MADE ELEMENT TO THIS.
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