Medical marijuana grows at the River Rock Medical Marijuana Center's natural light cultivation site in Denver.
Medical marijuana grows at the River Rock Medical Marijuana Center's natural light cultivation site in Denver. MCT
Medical marijuana grows at the River Rock Medical Marijuana Center's natural light cultivation site in Denver. MCT

Economy

December 31, 2013 1:46 PM

A happy new year for pot enthusiasts: First retail shops in U.S. ready to open in Colorado

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