. "an...In addition humans have always been mildly polygynous in evolutionary... http://www.bio-medicine.org/inc/biomed/biology-news.asp http://feeds.bio-medicine.org/latest-biology-newsDate:2/24/2010 anazawa argues that humans are evolutionarily designed to be conservative, caring mostly about their family and friends, and being liberal, caring about an indefinite number of genetically unrelated str" . . . .