[Wisha Haddan H3]

I could maybe go as far as believing in a cover up of what the administration knew about bin laden before the 9/11 attacks. But as much as I dislike President Bush, I would never believe he authorized, approved or orchestrated the actual hijacking or attacks. Nor anyone in our government. No way.

As Paragon said, you don't have to actually melt structural steel for the building to come down. It just has to deform.

And it's no great coincidence that the buildings collapsed vertically instead of falling sideways. During an intentional demolition, you place charges on all the major structural points and set them off simultaneously. If all the supports go at the same time, the building will fall vertically (or collapse inward).

With the twin towers, the planes struck each building, physically stripping away fireproofing and saturating several floors with jetfuel simultaneously. As they burned, all of the supports were heated evenly over the same time span. It's no wonder they failed at the same time and that therefore each building collapsed vertically.

In addition, all the buildings at the WTC (not just the twin towers) were designed to collapse vertically if they ever fell instead of into nearby buildings. They had to withstand lateral, torsional and compression forces (from wind or earthquake) by redirecting them to the center and downward. The buildings did what they were supposed to, not because of conspiracy or demolition, but because of architecture and engineering.