Environment: How safe do you feel?

Juan Gonzalez discusses the environmental consequences of the World Trade Center collapse. Novelist and screenwriter Michael Tolkin discusses Under Radar, his unnerving story of violence and revenge. And before D.W. Griffith and Lillian Gish, there was Alice Guy Blanché, the world's first woman filmmaker and the director of over 400 films between 1896 and 1920. Alison McMahan has her nearly-forgotten story.