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May I complement you on your work on House Finch, please?[1] --Walter Siegmund (talk) 05:41, 27 May 2008 (UTC)
[2] you are right of course that the argument is rubbish because the earth is not a closed system, since it has radiation flux through it. We have had that debate on those pages before. However you may be interested that without background radiation releasing heat in the earth itself the earth's core would have frozen in about 10 million years (I think it was Rutherford who first did that calc). --BozMo talk 08:03, 17 July 2008 (UTC)