Understanding All the Elements

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Vanity Fair’s David Rose questions the guilt of a man convicted of a series of rapes and murders in Columbus, Georgia in the 1970s. Then, we turn our attention to the development of plutonium in the middle of the 20th century. Later on, we learn about the Melungeons--a group that lives in isolated areas of Appalachia. Plus, a butcher and a farmer answer your questions about meat on Please Explain.