Popular Mechanics debunks the nuts who wallow in the shallow 9/11 conspiracy pool...
Popular Mechanics has a quality writeup debunking the most popular 9/11 conspiracies of the lunatic fringe of this nation.
This really is a must read - and while the hard core conspiracy believers always chalk up evidence debunking their conspiracy as part of it, those with connected lobes will appreciate that someone has taken the time to get to the bottom of some of the wackier aspects of those who can't let any opportunity to feed their anti-US government paranoia go by, even if that means propping up their house of cards on the bodies of the dead.