HBDVideos

http://www.thisviewoflife.com/index.php

http://hbdchick.wordpress.com/start-here/

http://johnhawks.net/weblog/topics/race/differences/clinton_2007_proportion_differences_speech.html

http://www.youtube.com/watch?v=jUxpMBl7RBY

http://www.pbs.org/wgbh/nova/body/epigenetics.html