One in ten cannabis users are dependent on the drug, according to some estimates.
The law on medicinal cannabis in the UK changed. Not that you'd notice.
Most people assume drugs are illegal because they are dangerous, but the reasons aren't related to their relative risk or harm.
With its tales of bloody violence, corruption, international trade and entrepreneurial innovation, Guzmán's trial offers a telenovela-style explainer on Mexican cartels and their American clients.
Two-thirds of all US states now have some kind of legal pot, and support for legalization has never been higher. But ballot initiatives can only take legalization so far, researchers say.
Midterm voters in Utah, Missouri, Michigan and North Dakota will decide whether to join the 31 US states that have some form of legal marijuana. But ballot initiatives can only take pot so far.
Court ruling may well undo decades of often racist cannabis law enforcement.
Canadian drug policy began to take shape well before anti-immigration attacks on Chinese establishments in 1908. Drugs like opium and coke were causing grave public health concerns.
Medical cannabis challenges scientific norms and the usual regulation of medicines.
Mexico's presidential front-runner wants to end violence in Mexico by pardoning drug traffickers and corrupt officials. Some 235,000 people have died in the country's 11-year cartel war.
The evidence is clear on the sort of support that is needed to reduce the harms of drug use. A punitive approach that denies people a second chance makes it more likely they will reoffend.
The cost of a life-saving drug in Canada is rising by 3,000 per cent. A national pharmacare plan could bring order to this chaotic world of Canadian drug prices.
As the nation grapples with its opioid addiction epidemic, an understanding of how the drugs affect people is important. The powerful class of drugs actually can change the brain.
Budget cuts have consequences.
Both focus too much on controlling supply and not enough on demand.
The figures don't really add up.
Mexico and Canada are about to turn medical cannabis into North America's most lucrative new market.
A controversial law to officially engage Mexico's armed forces in fighting crime has human rights groups dismayed.
Attorney General Jeff Sessions recently echoed the 1980s philosophy to 'just say no' to drugs. It's important to remember, however, that the policy was ineffective.
Colombia's plan to turn coca-leaf farmers into coffee growers has a fatal flaw: the market.