Insight: "Diary of a Bad Year" / Sirolli Institute / Nicolas' Garden / Sound Advice: Sean and Slim

Summary: Best of Insight 2013 continues with some of our favorite interviews: NPR Correspondent Kelly McEvers, aid worker and TED talk contributor Ernesto Sirolli, eight-year-old entrepreneur Nicolas Come, and opera host Sean Bianco's salute to Slim Whitman.