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Home Video PBS NewsHour Weekend full episode Dec. 23, 2017

PBS NewsHour Weekend full episode Dec. 23, 2017

On this edition for Saturday, Dec. 23, drones help prevent conflicts between farmers and elephants in Tanzania, and a documentary film on how opioids have affected Somerville, Massachusetts. Also, an investigation into the impact of homeless relocation programs in American cities. Hari Sreenivasan anchors from New York.