In his book The Happiest Man in the World, Alec Wilkinson chronicles the life of Poppa Neutrino. In 1998, Neutrino sailed a raft made of junk across the Atlantic. Now he's preparing for a solo journey across the Pacific. Wilkinson and Poppa Neutrino — the former William David Pearlman — talk with Renee Montagne about the book and the journeys.
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