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  1. As to diseases from us wiping out the Neanderthals, seeing as we mated with them so much, that 2% of our genetic code is Neanderthal, unlikely. Since we share 30% of our genetic code with them, I still think that the supervolcano theory is a good one. Supervolcanos have wiped out civilisations, in the past, why not a regional species, if it had been worse, it might have wiped us out too.
    The human race has been close to extinction a number of times, what if the volcano eruption had been in Africa, then Neanderthals might be running the show. A number of their gene’s, have helped us with disease resistance and some of their gene’s contribute to our obesity.

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