Eric Takabayashi wrote:

> He is merely playing the Devil's Advocate, I'm sure. I have read of scientific
> authorities saying in all seriousness (though NOT consciously promoting
> racism) that recent trends to live and marry beyond traditional borders is
> undoing tens of thousands of years of evolution which occurred in relative
> isolation such as that which allowed some European people to have lighter
> shades of skin for better absorption of vitamin D from the sun, while those in
> warmer climates developed naturally darker shades of skin to protect against
> solar UV radiation.

Compared to the "recent trend to live and marry beyond traditional
borders", the introduction over the last few thousand years of clothing
and shelter might be more relevant.


-- 
"You are about to embark on a course of studies which...  form a noble
adventure. Except for those of you who will become teachers or dons, all
that you will learn in the course of your studies will not be of the
slightest possible use to you in later life -- save only this -- that if
you work hard and intelligently you should be able to detect when a man
is talking rot"

J.A. Smith, 1914