Everyone knows the popular 9/11 "documentary" Loose Change alleges that the World Trade Center was destroyed by controlled demolitions, and that the Pentagon was struck by a missile instead of a hijacked airliner. But that's just the beginning: Loose Change also says United Airlines Flight 93 actually landed in Cleveland, its passengers were unloaded and mysteriously disposed of, and that the phone calls which supposedly came from these passengers were actually created using sophisticated voice-morphing technology.
In other words, for every 9/11 theory that is successfully knocked down by people who actually know what they're talking about, a dozen even more outrageous theories rise to take their place. That's why Debunking 9/11 Myths, a devastating, comprehensive and fully documented refutation from the editors of Popular Mechanics, is unlikely to convince the true believers.
For people who are on the verge of joining the "9/11 truth movement" but haven't quite made the leap, however, the book may bring them back from the edge. Debunking 9/11 Myths illustrates how the conspiracy theorists use pseudoscience, rumours, half-truths, logical fallacies, quotes taken out of context and blatant lies to make their case.
Take the allegation that the World Trade Center towers must have been brought down by controlled demolition, because jet fuel does not burn at a temperature hot enough to melt the steel with which the towers were built. As Debunking 9/11 Myths illustrates beyond a reasonable doubt, the steel didn't have to melt for the towers to collapse - the fires simply had to burn hot enough for the steel to lose most of its strength.
As for the "explosive detonations" supposedly seen in videos of the collapsing towers, the collapsing upper floors pushed debris, dust and air out the windows - which is why the "detonations" look like puffs of debris, dust and air, not explosions. (For the record, this is what a controlled demolition actually looks like. Note the explosive flashes.)