My guest today is John Green. John is the award-winning, #1 bestselling author of books including 'Looking for Alaska,' 'The Fault in Our Stars,' 'Turtles All the Way Down,' 'The Anthropocene Reviewed,' and 'Everything is Tuberculosis.' John and his brother Hank Green have co-created a lot of projects together, including their massive YouTube channel, Vlogbrothers, and their podcast, 'Dear Hank and John.' He also serves on the Board of Trustees for global health nonprofit Partners in Health. And when I asked John if there was a piece of music that changed his life, he knew the answer right away: "You'll Never Walk Alone" by Gerry and the Pacemakers.

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