PBS NewsHour Weekend full episode Sept. 6, 2014
09/06/2014 | 25m 30s | Video has closed captioning.
On this edition, President Barack Obama has said a strong ground game is needed to confront Islamic State fighters. But with what troops and when? And, in our signature segment, could cancer be detected by using a dog's extraordinary sense of smell?
Problems Playing Video? | Closed Captioning