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Re: SV: Watery evolution of man?
--- Tommy Tyrberg
> ... Is
> there any other example of a genetic change
> that young that has spread to 100% of all human
> populations everywhere?
Resistance to plague and smallpox are (or
were)close to universal, and resistance to AIDS
is getting there as the virus spreads.
Tool-making has brought genetic changes like
handed-ness, but I don't recall whether they've
all been shown to be within the 270 ka span.
Speaking of human evolution and fate, the climate
change doom-sayers might suggest that we switch
the thread subject to "Watery extinction of man".