Book Review

This week, Stephen Greenblatt on his new book “The Swerve: How the World Became Modern”; Andre Aciman discusses his new collection of travel essays called “Alibis: Essays on Elsewhere”; Jacques Steinberg profiles athletes who compete in the most grueling triathalons in “You Are An Ironman”; Julie Bosman has notes from the field; and Jennifer Schuessler has best-seller news. Sam Tanenhaus is the host.