Steven Earl Jones (born March 25, 1949) is an American physicist. Among scientists, Jones became known for his long research on muon-catalyzed fusion. Otherwise, Jones is mostly known for cofounding Scholars for 9/11 Truth in 2005, then leaving and founding Scholars for 9/11 Truth & Justice in 2006, both concerned with the 2001 attacks on the World Trade Center. Jones has claimed that mere airplane crashes and fires could not have resulted in so rapid a fall of the WTC buildings, suggesting controlled demolition instead. In late 2006, some time after Brigham Young University (BYU) officials placed him on paid leave, Jones retired as professor emeritus.