This has some evolutionary implication.
This is very old news. No less an authority than National Geographic covered this decades ago.
bookmark
thanks for the ping.
Girls Just Want to Be Mean
The New York Times Magazine | 02/24/2002 | MARGARET TALBOT
Posted on 02/22/2002 5:54:58 PM PST by Pokey78
http://www.freerepublic.com/focus/fr/633546/posts