President-elect Trump chooses a retired Marine general to head the Pentagon. Syrian rebels agree to form a new alliance as the regime bombards Aleppo. And thousands of Cubans turn out to watch Fidel Castro's funeral procession. A panel of journalists joins Diane for analysis of the week's top international news stories.
Of all our senses, the sense of smell is most closely tied to mental health and happiness. It was the first of our senses to evolve, yet it often takes a cultural backseat to sight and sound. An expert on smell talks about the psychology, biology and sociology of our olfactory sense.
- Rachel Herz visiting professor at the Department of Psychology at Brown University.
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