On today's show: We're replaying some of our favorite interviews from the past year. Kurt Eichenwald looks at how some of the decisions made in the first 500 days that followed the 9/11 attacks have dramatically reshaped the world in the years since. Junot Diaz talks about his new book of short stories, This Is How You Lose Her. Luis Rodriguez tells us how he escaped from gang life. And William Bryant Logan talks about airlife would not exist without it, yet we take it for granted.