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Heroin in the Heartland, Smart Guns, The Slave Ship

What was once thought of as an inner-city problem is now a national epidemic: heroin addiction; Smart-gun technology is not new, yet these guns are not mass-produced or sold in the U.S.; Scott Pelley reports on the Smithsonian and the Slave Wrecks Project's journey to recover the first artifacts known to be preserved from a slave ship.
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