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This phenomenon shows how science works. The theory was originally proposed in 2012. Nine years later, after many studies, it now seems clear that the polar vortex is not weakened by climate change. During these nine years, there were a number of conflicting studies and arguments among the scientists.

Compare that to the basic conclusions of climate change science: the Earth has been warming for over a century, the primary driver is human CO2 emissions, and that the levels of warming are extremely risky. No serious studies have contradicted these conclusions.

Also notice that the media is terrible at distinguishing between real scientific uncertainties, such as the weakening of the polar vortex, and fake uncertainties such as some of you post here.
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