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Re: Conspiracy Theory- Earth's Expansion

The hypothesis that the Earth is expanding was relatively popular before subduction zones were discovered. Since then -- late 1960s or so -- it has been as unnecessary as the phlogiston theory. Plus, as far as I know, the proponents of an expanding Earth never bothered to explain where the additional matter was supposed to come from.

Some later versions of the hypothesis rest on the assumption that Pangaea had existed unchanged throughout the Earth's history till the Early Jurassic. This has been known to be wrong for a few decades, too: Pangea only formed in the Permian.