World Trade Center 7 (WTC 7) University of Alaska Fairbanks

The principal conclusion of the University of Alaska Fairbanks WTC 7 study is that fire did not cause the collapse of WTC 7 on 9/11, contrary to the conclusions of NIST and private engineering firms that studied the collapse. The secondary conclusion of our study is that the collapse of WTC 7 was a global failure involving the near-simultaneous failure of every column in the building.

https://ine.uaf.edu/wtc7