Since California passed the first medical marijuana law in 1996, 30 US states and the District of Columbia have legalised medical marijuana.
People opposing medical marijuana are often concerned about increased crime rates, but analysis of city-level data across the US found medical marijuana laws have little effect on crime.
A parade of bar men protest Prohibition along Yonge Street in Toronto in 1916.
Library and Archives Canada
History has shown that prohibiting popular intoxicants spurs illegal and sometimes excessive use. Ontario municipalities taking up Doug Ford's offer to ban local retail weed sales should take note.
Workers produce medical marijuana at Canopy Growth Corporation’s Tweed facility in Smiths Falls, Ont., in February 2018. The company wants a a “greenhouse outlet” to sell its products.
THE CANADIAN PRESS/Sean Kilpatrick
Provincially owned cannabis retailers have a lot to do before cannabis goes on sale in Canada on Oct 17.
Small vials of CBD, an ingredient in a drug just approved by the FDA to treat two types of epilepsy..
A drug made from a molecule produced from cannabis gained approval from the FDA on June 25. But the molecule, CBD, is decidedly different from some other ingredients in cannabis: It doesn't result in a high.
Expert fact checks claim that cannabis cures cancer.
Small vials of CBD, which some believe could be a cure for many ailments.
A drug made from a molecule produced from cannabis gained unanimous approval from an FDA panel. But the molecule, CBD, is decidedly different from some other ingredients in cannabis: It doesn't result in a high.
Marijuana varieties on display in a California dispensary.
AP Photo/Mathew Sumner
Medical marijuana? Recreational marijuana? Both or neither? Here's a quick guide to the topsy-turvy landscape for marijuana regulation in the US.
Former drug and alcohol doctor Di Natale says the ‘tough on drugs’ approach causes enormous harm.
Dealing with cannabis is basically a state matter but the Greens propose an Australian Cannabis Agency be set up to bring together state and territory governments, experts and regulators.
‘Don’t mind me dear, I’ve got joint problems.’
Cannabis use among the baby boomer generation is on the rise, here's why.
Will offices, construction sites and medical clinics be full of stoned workers after Canada’s promised marijuana legalization date of July 2018?
Will offices, construction sites and medical clinics become less safe after marijuana legalization in Canada this summer? Our experts review the evidence, or lack of it.
A still from the 1936 propaganda film ‘Reefer Madness.’
Research from the last few decades suggest marijuana helps more than it harms. But Jeff Sessions' proposed crackdown would take us back nearly a century.
Patients in 29 states can legally use medical marijuana to treat their symptoms.
Patients in 29 states rely on medical marijuana to treat pain, nausea, seizures and other ailments. But all that could change.
Marijuana brand name stickers are visible as customers line up at the counter in CannaDaddy’s Wellness Center marijuana dispensary in Oregon in April.
(AP Photo/Don Ryan)
There's a strong case for governments to allow cannabis producers to brand their products via packaging and advertising like any other product. It could boost quality and consumer satisfaction.
Results may vary.
Many hope that marijuana will help their insomnia. A sleep psychologist examines the evidence.
Thousands of South Africans are calling for the legalisation of marijuana.
If South Africa's argument in court is that marijuana causes harm, it deserves to lose. The real question it should ask is whether criminal prohibition is the effective way forward.
This is what a marijuana plant, growing legally in Colorado, looks like.
The federal government outlaws marijuana, but many states are legalizing it. Coupled with the growing number of cannabis-related patents, the potential for court battles is dizzying.
High government taxes on legalized marijuana could push people back to the black market.
(THE CANADIAN PRESS/Darryl Dyck)
The Liberal government is on the way to legalizing marijuana. They should keep taxes low to discourage the black market.
Will Trump’s America lose out on the next big thing in business?
Mexico and Canada are about to turn medical cannabis into North America's most lucrative new market.
While the law is slowly coming along, those who need medicinal cannabis are mostly still unable to obtain it.
So far, only a few patients have been able to obtain lawful medicinal cannabis, and only after a long and difficult struggle.
A woman with MS leaves a licensed medical cannabis dispensary in Illinois.
AP Photo/Seth Perlman
There are many anecdotal reports indicating cannabis' beneficial effects for treating MS symptoms, but research with cannabis is difficult to do.