PBS News Weekend S05 E97 December 3, 2017

On this edition for Sunday, Dec. 3, President Donald Trump goes on the offensive in a flurry of tweets, changing his previous account of Michael Flynn's firing and contradicting the testimony of his former FBI director. And, legendary conservationist Jane Goodall talks about a new film documenting her life and work. Hari Sreenivasan anchors from New York.