Steven Earl Jones (born March 25, 1949) is an American physicist. Among scientists, Jones became known for his long research on muon-catalyzed fusion and geo-fusion. Jones is also known for his association with 9/11 conspiracy theories. Jones has claimed that mere airplane crashes and fires could not have resulted in so rapid and complete a fall of the WTC Towers and WTC7 (which was not hit by a plane, nor was ever claimed to have been), suggesting controlled demolition instead. In late 2006, some time after Brigham Young University (BYU) officials placed him on paid leave, Jones chose to retire as part of deal with BYU which included BYU abandoning their academic review of Jones' work.