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- Path: sparky!uunet!wupost!uwm.edu!ogicse!news.u.washington.edu!stein.u.washington.edu!wcalvin
- From: wcalvin@stein.u.washington.edu (William Calvin)
- Newsgroups: sci.bio
- Subject: Re: Evolution of the human brain's cognitive capacity
- Message-ID: <1992Dec26.235236.11707@u.washington.edu>
- Date: 26 Dec 92 23:52:36 GMT
- Article-I.D.: u.1992Dec26.235236.11707
- References: <1992Dec24.025548.27816@monu6.cc.monash.edu.au> <Bzrn4H.GMq@newcastle.ac.uk> <1992Dec24.164212.20700@news.media.mit.edu> <1992Dec25.011901.22049@u.washington.edu> <BztI7q.1oM@newcastle.ac.uk>
- Sender: news@u.washington.edu (USENET News System)
- Organization: University of Washington
- Lines: 47
-
- w.p.coyne@newcastle.ac.uk writes:
-
- > Had you publicised the theory before 1990 in articles, talks or the
- >media? Or was yours an expansion of an existing well publicised
- >theory of the effects of climate on human evolution..
- >
- > I ask because "Children of the Ice" by John and Mary Gribbin
- >was also published in 1990. I think sometime in the late 80's John
- >Gribbin did a radio series for the BBC of 10 minute episodes where
- >he explained this theory of the importance of climatic interaction with
- >humans.
- >
- > HIs discussion of the settlement of Greenland by the Vikings
- >during a warm period
- >lasting a few centuries, and then its destruction caused by the colder
- >weather of the 15th century was memorable. The phrase "adapt or die"
- >was very appropriate because the settlers could have survived if they
- >had discarded their European lifestyle and agriculture and adopted the
- >eskimo way of life (maybe some of them did).
-
-
- The idea (of climate change affecting human evolution) is neither original to
- Gribbin or me, it goes back at least to Darwin, who in the ORIGIN OF SPECIES
- said, "The action of climate seems at first sight to be quite independent
- of the struggle for existence; but in so far as climate chiefly acts in
- reducing food, it brings on the most severe struggle between individuals,
- whether of the same or of distinct species, which subsist on the same kind
- of food. Even when climate, for instance extreme cold, acts directly, it
- will be the least vigorous, or those which have got the least food through
- the advancing winter, which will suffer the most."
- THE ASCENT OF MIND is not particularly concerned with what has
- happened since the end of the last ice age about 12,000 years ago; my one
- brief mention of the Iceland-Greenland Norse saga at page 107 came from
- John and Mary Gribbin's excellent article in NEW SCIENTIST of
- 20 January 1990, and was inserted into the galley proof for ASCENT,
- which came out later that year. ASCENT proceeds from the observation
- that three things happened starting about 2-2.5 Mya: brain
- enlargement, prolific stone toolmaking, and the ice ages; it asks
- what might the relations between them.
- ASCENT is particularly about the process whereby ice margin
- fluctuations serve to select for certain traits; I'm a neurophysiologist
- interested in the hominid brain enlargement/reorganization problem.
- Any originality of ASCENT lies in those areas, not in calling attention
- to the role of climate change in speeding evolution which has been
- widespread in paleoanthropological circles for some time.
-
- William H. Calvin WCalvin@U.Washington.edu
-