Honest to goodness, I learn so much right here at TM.
http://www.pbs.org/wgbh/pages/frontline/shows/knew/etc/cron.html
http://www.pbs.org/wgbh/pages/frontline/shows/binladen/who/alqaeda.html
http://www.fas.org/irp/news/1998/11/98110602_nlt.html
http://msnbc.msn.com/id/5224036
http://nucnews.net/nucnews/2001nn/0110nn/011019nn.htm