A pangolin is released into the wild by officials at a conservation forest in Indonesia in 2013. The animal was among 128 pangolins confiscated by customs officers from a smuggler's boat off Sumatra. Jefri Tarigan/AP hide caption

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A Bulgarian border policeman stands near a barbed wire wall on the border with Turkey in July 2014. Experts believe that about two-thirds of the heroin that enters Europe comes through Bulgaria, and that a third of that moves on to the United States. Dimitar Dilkoff/AFP/Getty Images hide caption

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Deuel County Sheriff Adam Hayward shows off a container of confiscated marijuana in Chappell, Neb., in July. Nikki Kahn/The Washington Post/Getty Images hide caption

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Brooke Gehring, CEO of Patients Choice and Live Green Cannabis, stands in one of her company's grow houses in Denver. Kirk Siegler/NPR hide caption

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Policemen show pictures of body parts found in parcels as they address reporters in Bangkok on Monday. Thai police said two Americans who had tried to send the parts to the U.S. had fled the country. Chaiwat Subprasom/Reuters /Landov hide caption

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Prostitutes arrested in Guatemala City in 2012, as part of an operation against human trafficking. Johan Ordonez/AFP/Getty Images hide caption

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