(AP) -- Kevin Barrett believes the U.S. government might have destroyed the World Trade Center. Steven Jones is researching what he calls evidence that the twin towers were brought down by explosives detonated inside them, not by hijacked airliners. These men aren't uneducated junk scientists: Barrett will teach a class on Islam at the University of Wisconsin this fall, over the protests of more than 60 state legislators. Jones is a tenured physicist at Brigham Young University whose mainstream academic job has made him a hero to conspiracy theorists. Five years after the terrorist attacks, a community that believes widely...