MLK Legacy Conversations
Philadelphia thought leaders examine the life, death, and legacy of Martin Luther King from January to April.
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Freakonomics
Host Stephen Dubner has surprising conversations that explore the riddles of everyday life and the weird wrinkles of human nature-from cheating and crime to parenting and sports. Dubner talks with Nobel laureates and provocateurs, social scientists and entrepreneurs - and his Freakonomics co-author Steve Levitt.