Marijuana is displayed through a magnifying glass inside the Evergreen Apothecary in Denver, Colorado, U.S., on Thursday, Jan. 9, 2014. Colorado has just legalized the commercial production, sale, and recreational use of marijuana, while Washington State will begin its own pot liberalization initiative at the end of February. On Jan. 8, New York Governor Andrew Cuomo said his state would join 20 others and the District of Columbia in allowing the drug for medical purposes. Photographer: Matthew Staver/Bloomberg via Getty Images