This Tuesday, Sept. 11, 2018 photo shows a marijuana plant at SLOgrown Genetics in the coastal mountain range of San Luis Obispo, California. The company provides wholesale medicine to licensed dispensaries and delivery services. They specialize in the farm-to-table cultivation and production of high quality, organic, medical grade cannabis. (AP Photo/Richard Vogel)
Canada on Wednesday became the first major world economy to legalize recreational marijuana, beginning a national experiment that will alter the country’s social, cultural and economic fabric, and present the nation with its biggest public policy challenge in decades.