Terry Gross

Primatologist duo Dorothy Cheney and Robert Seyfarth discuss their new book, Baboon Metaphysics: The Evolution of a Social Mind. The husband-and-wife team spent years studying a group of baboons in Botswana, observing their behavior, vocalizations — and even their feces — to better understand the primates' complex social structure.

In A Slave No More, historian David W. Blight showcases the emancipation narratives of two men, one from Alabama and one from Virginia. Manuscripts written by Wallace Turnage and John Washington, and genealogical information compiled by Blight, combine to tell the stories of their lives as slaves and their harrowing flights to freedom.

We continue our conversation about A Slave No More and the men whose stories it tells with three of John Washington's descendants: granddaughter Ruth Washington, great-granddaughter Barbara Anne Hinksman, and great-great-granddaughter Maureen Ramos.