Terry Gross

Jason Reitman and Diablo Cody are the director-screenwriter team behind the new film Juno, about a tough, sardonic 16-year-old girl; when she gets pregnant, she gives the baby up for adoption to a couple she finds through the PennySaver. New York Times critic A.O. Scott describes Juno as a "feminist, girl-powered rejoinder and complement to [the film] Knocked Up." Reitman also directed the satire Thank You For Smoking. Cody is the author of the memoir Candy Girl: A Year in the Life of an Unlikely Stripper.

David Wilcove, one of world's leading experts on endangered species, discusses his new book, No Way Home, which chronicles the decline of the world's animal migrations. Wilcove is professor of ecology, evolutionary biology and public affairs at Princeton University.

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.