Canada is legalizing marijuana Wednesday: Here's how it will work

Canada is legalizing the adult use of marijuana on Oct. 17 and will be the second and largest country to do so. The federal government established the broad outline of the legalization law but left it up to provinces and territories to fill in some of the details - such as whether to allow home grows, to establish a legal purchase age of 18 or 19, and whether to sell through government-run pot shops or private outlets.