The world’s largest marijuana company, Canopy Growth Corp., is worth about $7 billion. The Globe took a look inside its Smiths Falls, Canada, headquarters. The rise of Big Marijuana, a fledgling industry born of, and accelerating, the global loosening of cannabis laws, thrills Wall Street investors but terrifies public health and social justice advocates. Like us on Facebook https://www.facebook.com/globe Follow us on Twitter https://twitter.com/BostonGlobe Follow us on Google+ https://plus.google.com/+bostonglobe

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