In early September of 2021, a poll of adults in the United States revealed that 48% of people were still unaware that a third World Trade Center tower, WTC7, collapsed in Manhattan on September 11, 2001.
Among the 52% of American adults who do know about the collapse of Building 7, a steel-framed skyscraper that stood 47-stories tall at the World Trade Center complex since 1987, 51% are not convinced of the official explanation of its collapse, i.e. that normal office fires caused its structure to fail. The official explanation, produced in a 2008 report by NIST, the National Institute for Standards and Technology, has been contested by a study conducted at the University of Alaska Fairbanks, which concludes that WTC7 could only have been brought down by controlled demolition. The final UAF report was released in March 2020.Additionally, the poll reveals that 37% percent of American adults either disbelieve or have doubts about the destruction of the Twin Towers being due to fires caused by the impact of airliners and jet fuel. Controlled demolition, while ignored by NIST - which self-admittedly "did not look for explosives" - has been widely offered as the probable cause of the buildings' collapses by scientists worldwide. It is critical to note that independently processed samples of Ground Zero dust were found to contain unreacted incendiary residues, as published in 2009 in the Open Chemical Physics Journal by Niels Harrit, PhD and colleagues, further supporting the theory of controlled demolition. The theory is also publicly endorsed by more than 3,400 professionals from the organization Architects and Engineers for 9/11 Truth, who unanimously call for a new investigation into the possible use of explosives as the actual cause of the destruction of the World Trade Center buildings.
More than one-third (35%) of Americans believe the U.S. government either knew the 9/11 attacks were coming and let them happen (22%), or that components of the U.S. government helped plan the attack (13%). These margins have increased since a 2007 Zogby poll which found that 31% of people aligned with one of these two theories.Despite 70% of respondents reporting that they were unaware of current legal initiatives to reinvestigate the events of 9/11, 58% expressed support for a new investigation into 9/11, such as a Grand Jury.Poll results represent a +3% margin of error at the 95% confidence level. Over the weekend of September 4-6th, 2021, Pulse Opinion Research, LLC, conducted an automated telephone survey of 1,156 randomly selected adults living in the United States of America. The 9/11 Truth Action Project, a non-profit organization, commissioned the poll for research and marketing purposes.