If the U.S. had pursued a different foreign policy during the '80s and '90s, could 9/11 have been prevented? Also: BAM Cinematek’s celebration of J. Hoberman’s 30 years as a film critic for the Village Voice. We hear about the exciting discovery of a 52-million-year-old fossil of a primitive bat. And the guru of how-to, Larry Ubell, answers your home repair questions!