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

itoggle caption Kirk Siegler/NPR

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

itoggle caption Chaiwat Subprasom/Reuters /Landov

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

itoggle caption Johan Ordonez/AFP/Getty Images