This month, two US states voted to legalise, regulate and tax marijuana. From advertising and marketing to drugged-driving enforcement, we ask what's ahead.
How will retailers and growers market and advertise marijuana?
The laws forbid under-21s from possession marijuana, and Washington bars marijuana adverts from within 1,000 ft (305m) of schools, playgrounds, parks and other places children gather.
An evening joint around a camp fire in Colorado, though perfectly legal in that state, could still threaten your job, because the new Colorado law specifically lets employers forbid marijuana use among workers.
The US once prohibited alcohol. Do these laws portend the nationwide end to marijuana prohibition?
Daniel Okrent, author of Last Call: The Rise and Fall of Prohibition, sees two parallels between today's legal and cultural marijuana environment and the late 1920s and early '30s when the move to end America's experiment with prohibition of alcohol gained steam.
Will people stop distinguishing between "recreational use" and "medical use" of marijuana?
Neither the Washington nor the Colorado laws refer to recreation, but the media uses the term to distinguish the new movement from medical marijuana legal in at least 16 states. Yet no-one talks about "recreational use" of beer, wine and spirits.
