This week, a conversation with author Jonathan Weiner on the science of immortality; Julie Bosman has notes from the field; Times dining critic Sam Sifton tells us about four endangered wild fish; and Jennifer Schuessler has best-seller news. Sam Tanenhaus is the host.

This week, a conversation with author Jonathan Weiner on the science of immortality; Julie Bosman has notes from the field; Times dining critic Sam Sifton tells us about four endangered wild fish; and Jennifer Schuessler has best-seller news. Sam Tanenhaus is the host.

This week, a conversation with novelist Allegra Goodman about her new book,”The Cookbook Collector”; Julie Bosman has notes from the field; author Stefanie Syman tells us about the long history of yoga in America; and Jennifer Schuessler has best-seller news. Sam Tanenhaus is the host.

This week, a conversation with Mo Willems and Jon J Muth about their new children’s book, “City Dog, Country Frog”; Christine Muhlke discusses Anthony Bourdain’s new book, “Medium Raw”; Julie Bosman has notes from the field; and Jennifer Schuessler has best-seller news. Sam Tanenhaus is the host.

This week, a conversation with Jennifer Egan about her new novel; Julie Bosman has notes from the field; Christopher Hitchens on Philip Pullman’s version of the life of Christ; and Jennifer Schuessler has bestseller news. Sam Tanenhaus is the host.

This week, Baz Dreisinger tells us about the latest biography of reggae star Bob Marley; Charles McGrath on a new memoir by terrorism expert, Jessica Stern; Nicholas Confessore discusses two books about Eliot Spitzer; and Jennifer Schuessler has best-seller news. Sam Tanenhaus is the host.

This week, Yale psychologist Paul Bloom on the origins and meanings of pleasure; Charles McGrath talks about John Updike's archive; David Carr reviews "Portrait of the Addict as a Young Man" by Bill Clegg; and Jennifer Schuessler has bestseller news. Sam Tanenhaus is the host.

This week, Christopher Hitchens on his new memoir, "Hitch-22"; Patricia Cohen describes a brewing controversy in the Orthodox Jewish community; Chris Suellentrop explores the world of videogames; and Jennifer Schuessler has bestseller news. Sam Tanenhaus is the host.

This week, Sloane Crosley talks about her new essay collection, “How Did You Get This Number?”; Julie Bosman with notes from the field; Deborah Solomon reviews a new biography of art dealer Leo Castelli; and Jennifer Schuessler has best-seller news. Sam Tanenhaus is the host.

This week, a conversation with Ted Mooney about his new novel, "The Same River Twice"; Julie Bosman with notes from the field; Bruce Handy on children's books by John Grisham and Rick Riordan; and Jennifer Schuessler has best-seller news. Sam Tanenhaus is the host.