The New York Times has just announced that four of its journalists are missing in Libya. Among them: two-time Pulitzer Prize winner Anthony Shadid; Stephen Farrell, a reporter and videographer who was kidnapped by the Taliban in 2009 and rescued by British commandos; and photographers Tyler Hicks and Lynsey Addario. The team was last in contact with NYT editors Tuesday morning, covering the retreat of opposition forces from the town of Ajdabiya. (MSNBC, NYT.)