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Stories with person: John Walsh
  • Monitoring legal pot: How do we know if it works? 
    Updated: Jun-10-15 5:08 pm

    SEATTLE - Dozens of government officials and researchers from a half-dozen U.S. states and a few countries that have legalized marijuana or are at least thinking about it are gathering in Washington state this week for meetings focused largely on one question: How do we know if it's working?