On Sat, 25 Nov 2000, Wally Day wrote:

> I understand that estimate has been raised to 25,000
> by some researchers, perhaps even more. I'm not sure
> if that's enough time to allow for adaptation. In any
> case, it would seem to apply to unly those of Native
> American descent.

Yes, the "Clovis" date of about 15,000 years ago has been
challenged by various researchers, but no such challenge has yet
gained wide acceptance.  A web search on "pre-clovis" will turn
up some hits.  As for whether that is enough time for adaptation,
there is no simple answer to that.  One variable is, adaptation
by whom?  As you've pointed out, this is most directly relevant
to those of Native American descent.  Those of European descent
have been eating New World foods only since the time of Columbus.

Todd Moody
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