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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.