The National Institute of Standards and Technology wrapped up the lengthy investigation into the collapse of World Trade Center Building number seven.
Doctor Shyam Sunder laid to rest a theory by many conspiracy theorists by saying an explosion did not cause the collapse. According to Doctor Sunder fire caused the collapse of WTC building number seven on September Eleventh.
The institute came to its discovery by recreating the building brick by brick, and beam by beam in special computers. They also filled the floors with the furniture that was on them, including every detail. They then set fire to the virtual building, and it eventually collapsed.