Charles Burnett's 1977 film, Killer of Sheep, has been called "a vision of African-American angst" and "a lost masterpiece." On today's show: why it's taken 30 years for the film to get a theatrical release. Also: a Vietnam vet and his son travel to Vietnam to try to make sense of what happened during the war. Then we'll find out why some want to give NYC's yellow cabs a drastic makeover. And on today's Underreported, a look at our endangered species policies and whether they're working. Plus, a new plan that could save the future of fishing.