Meanness - Women's Evolution

Meanness: 

• http://abcnews.go.com/blogs/health/2013/10/30/mean-girl-behavior-is-the-norm-science-says/

• http://www.vasa.abo.fi/svf/up/articles/do_girls_manipulate.PDF

On Blonde Hair and blue eyes and evolution: http://majorityrights.com/weblog/comments/the_evolution_of_blond_hair_and_blue_eyes_among_nordics

Additional reading: 
http://Calmisc.blogspot.in/2010/12/blonde-hair.html