Family, Allies Speak Out For Kenneth Bae's Release From North Korea | A New Career for Jeopardy Supercomputer Watson | Noise: A History of Sound and Listening

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Family, Allies Speak Out For Kenneth Bae's Release From North Korea | How the Federal Government Got into the Economic Data Business | A New Career for Jeopardy Supercomputer Watson | Noise: A History of Sound and Listening | Henry Louis Gates Jr. on 500 Years of African American History