Good information:

http://www.debunking911.com/
http://screwloosechange.blogspot.com/
http://wtc.nist.gov
http://www.ccdominoes.com/lc/LooseChangeGuide.html
http://www.historyofjihad.org/future.html

Recent attacks:
http://www.thereligionofpeace.com/index.html#Attacks