Canada became the world’s first major economy to fully legalise cannabis, sparking celebrations as the nation embarked on the controversial experiment in drug policy. Throughout the country huge lines outside pot shops snaked around city blocks, cannabis flew off store shelves and government websites processed 100 pot orders per minute. Scores of customers braved the cold for hours outside Tweed, a pot boutique in St John’s, Newfoundland that opened at midnight, to buy their first grams of