It's pretty depressing to read comments like this:

I know it's easier for some to believe that nobody could do something like 9/11 without some sort of conspiracy. That doesn't mean that 9/11 wasn't abused by our government to push an illegal war, this is did.

I researched this topic with an unbiased mind. I'm pretty bright in physics, but I had to hit a few books to really calculate the WTC floors falling down as they did on 9/11. My conclusion was that the WTC towers fell well within the limits of physics, and did not require explosives.

Steel is a very tough metal, but it's also very mutable when heated.... This is why it became the metal of choice for making swords, shields, and even armor. The temperatures that 'denial experts' implicate for melting are well above anything a medieval forge could attain. The fact is that steel loses much of it's strength at temperatures much lower than complete melting.

WTC7 collapsing is cited as 'undeniable proof' of demolition... But that would not take into account the huge amount of damage done to the side facing the tower. It also doesn't account for the support structures under WTC7 that literally used the adjacent tower for foundation support.

People can conclude what they want, and I'm willing to review any evidence. Though I can say with about 95% certainty that 9/11 was NOT demolition job. Note that this doesn't discredit other inside job theories - It's just the demolition part that I feel discredits the whole debate.