I'm not sure if I already posted this, but didn't see it replyed to nor did I see it get sent back to me (all my other posts do -- I'm set to retreive my own postings as well) so I'll post it again. I've done some research on the web which has convinced me that the greater a population of a city is, the greater the violent crime rate is (crimes/100000/year). I see this also as a paleolithic maladaptation - we are poorly adapted to being crowded. Any ideas? Erik