There is more scientific proof suggesting Building 7 was destroyed by controlled demolition than the resulting fires from the debris.
A new scientific study found the official story surrounding 9/11 was not compatible with the laws of physics. Several studies have already reached similar conclusions. However, this is the 1st to provide the long-awaited definitive answers.
The new study conducted at the University of Alaska Fairbanks took things one step further – we now know with a high degree of scientific accuracy that the official NIST explanation of how the World Trade Center 7 building collapsed is not only suspect, it’s 100% false, according to the findings of this academic study.
This study replicated and remodeled every factor relating to that infamous day involving building 7. Complete study results and the undeniable scientific evidence indicating Building 7 was a deliberate job on the next page:

so how did they plant the explosives with no one watching them and how long did it take?
Every one knows
Them who stuck the planes in their sides you moron
You dam right it was, controlled demolition the building comes straight down. This is just another cover up by Bush. Their have been alot of people who do that for a living and they knew that is what it was.
I did also bad real bad
Greg Baker actually you are 100% wrong the towers were built with a steel exterior framework around a central core of structural steel columns and concrete blocks. When the jets hit they took out part of the central core. The ensuing fire weakened the steel floor trusses as those trusses heated they began to sag. When they sagged to a certain point they began to pull the framework inward when that happened it could no longer hold the weight of the building above and it collapsed straight downward exactly as they were designed to do. All skyscrapers are designed and built to collapse into their own footprint in case of a catastrophic structural failure. I’m going to post a picture of the floor truss from the 82 floor of the north tower.
A tornado put a piece of roof shingle thru a broken window straight into a bedroom door. Sideways!
I watched it on TV live, stop
BS!
I like how everyone talks about just the towers and building seven being destroyed but don’t seem to know that a total of fifteen buildings were completely destroyed that day in New York