Originally Posted by Literature
Support for upper floors melts from the explosion. Upper floors cave in, pulling the support towards the center, then collapse into lower floor, creating a domino effect. It's more of a chemistry issue, I think.
I had read that if they had coated the structure, it wouldn't have collapsed due the burning jet fuel. Again, I haven't done one iota of research on my own but I've always felt that there were holes in the press releases and official explanations.
Even Bush's response was odd. I don't know, I just cannot figure out how and why the entire world was oblivious to these attacks. Either it was a "Perfect Storm" or something far more sinister.