Hello, I thought the group might have an interest in the following link from this month's Scientific American: http://www.scientificamerican.com/article.cfm?chanID=sa006&articleID=0007B7DC-6738-1DC9-AF71809EC588EEDF Mike ----------------------------------------------------------------- To unsubscribe from the list send an email to [log in to unmask] with the words SIGNOFF EVOLUTIONARY-FITNESS in the _body_ of the email. To get a copy of the old archives or the FAQ, look in the EvFit folder at http://briefcase.yahoo.com/dryeraser