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Courtillot is a "sceptic" of human causes in GW (i.e. not a complete denier). Two reasons for this: the influence of his former boss Claude Allegre, who is a notorious bugger, and possibly a desire to bring his field of expertise (paleomagnetism) back in the spotlight (and fundings). I read last year that the magnetic field has been stable now for one of the longest periods in the history of the earth and is weakening like it did before previous inversions.

Pierre
by Pierre on Wed Jul 11th, 2007 at 08:27:11 AM EST
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