Drug-dealing isn’t the only problem up at Columbia University these days: Political science professor David Epstein has been charged with incest with his daughter, the Columbia Spectator reports. According to court papers, he carried on a relationship with a female relative over a three-year period. His alleged partner was 18 when the relationship began in 2006, and the two often exchanged sexual text messages. Epstein was an oft-quoted professor who also blogged for The Huffington Post. He faces up to four years in prison.