By The Independent 10/28/2013
“…An authoritative study published by the Royal Society has explored the scientific basis for “competition and aggression” between women, and found that they have most likely evolved to be mean to one another. …”
Read the entire article: http://www.independent.co.uk/news/science/mean-girls-scientists-say-women-have-evolved-to-be-indirectly-aggressive-8908954.html