If humans weren't even around, don't polar shifts happen naturally throughout time anyway? Obviously humans aren't helping that but could humans actually stop it from happenening in the first place? I'm not trying to debunk anything. I don't know much about it all. I'm just sure I read somewhere that polar shifts have happened throughout the earth's history and that the earth heats up and cools down periodically. You are right. The earth goes through regular glacial (ice age) and interglacial (not ice age, like right now) periods. Recently, over the last 500,000 years, these have been going back and forth every ~60,000 years. Right now we are in a quite mild interglacial, so not as warm as even the last interglacial. However we should be seeing a long term COOLING of the climate as we are due to be heading into another glacial period. However we are seeing the opposite.
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