Dr. J. Leroy Hulsey of the University of Alaska Fairbanks has a study on the collapse of just World Trade Center Building 7, which fell even though it was not h

Dr. J. Leroy Hulsey of the University of Alaska Fairbanks has a study on the collapse of just World Trade Center Building 7, which fell even though it was not hit by a plane. So far he has concluded that: "The findings thus far are that fire did not bring down this building. Building failure simulations show that, to match observation, the entire inner core of this building failed nearly simultaneously."[1] [1]: http://ine.uaf.edu/projects/wtc7/ http://ine.uaf.edu/projects/wtc7/